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Should I buy a car that has "spark-plug problems"?

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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHShould I buy a car that has "spark-plug problems"?

Leading reported evidence

Replace brakes done, and so

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

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Performed · outcome unconfirmed

I've seen tires replaced, brakes done, and so on so the car when it arrives on the lot or in the showroom has no outstanding issues and can only leave a prospective buyer with a positive impression of the car after a test drive.

Should I buy a car that has "spark-plug problems"?
Frequently discussed work

Clean maf sensor too

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Suggestion

Cleaning the MAF sensor too?

Should I buy a car that has "spark-plug problems"?
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Leading evidence: 'Replace brakes done, and so' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean maf sensor too' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 15 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Clean maf sensor too

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Cleaning the MAF sensor too?

Should I buy a car that has "spark-plug problems"?

Repair such as

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
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Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

It could be a simple repair such as changing the sparkplugs and or coils..

Should I buy a car that has "spark-plug problems"?

Replace clutch

Suggestion or failed attempt

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Reported fixes
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Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The dealer had one of its techs replace the clutch.

Should I buy a car that has "spark-plug problems"?

Replace sparkplugs and or coils

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

It could be a simple repair such as changing the sparkplugs and or coils..

Should I buy a car that has "spark-plug problems"?
Frequently discussed actions (10)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Clean maf sensor too

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Cleaning the MAF sensor too?

Should I buy a car that has "spark-plug problems"?

Repair such as

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

It could be a simple repair such as changing the sparkplugs and or coils..

Should I buy a car that has "spark-plug problems"?

Replace brakes done, and so

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I've seen tires replaced, brakes done, and so on so the car when it arrives on the lot or in the showroom has no outstanding issues and can only leave a prospective buyer with a positive impression of the car after a test drive.

Should I buy a car that has "spark-plug problems"?

Replace clutch

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The dealer had one of its techs replace the clutch.

Should I buy a car that has "spark-plug problems"?

Replace sparkplugs and or coils

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

It could be a simple repair such as changing the sparkplugs and or coils..

Should I buy a car that has "spark-plug problems"?

Run away

No successful repair reported for this finding.

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1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Run away.

Should I buy a car that has "spark-plug problems"?

Run awhile until

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Suggestion

Sure car will run for awhile until that cylinder wall becomes aluminum marbles

Should I buy a car that has "spark-plug problems"?

Run but only needs gas."

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Suggestion

"Perfect condition 997TT, super cheap, doesnt run but only needs gas."

Should I buy a car that has "spark-plug problems"?

Test drive

No successful repair reported for this finding.

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Read evidence and context
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

In my opinion, if possible, it would be prudent to test drive the car to see the extent of the miss fire, then you would know what to look for on the second test drive after the "fix".

Should I buy a car that has "spark-plug problems"?

Suggestion

I've seen tires replaced, brakes done, and so on so the car when it arrives on the lot or in the showroom has no outstanding issues and can only leave a prospective buyer with a positive impression of the car after a test drive.

Should I buy a car that has "spark-plug problems"?

Test drive it and have a ppi done

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I will of course insist that it be fixed before I test drive it and have a PPI done.

Should I buy a car that has "spark-plug problems"?
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T154520Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

The dealer selling a car I'm interested in buying says everything is perfect, but there is a problem with the spark plugs which needs to be fixed. I'm not sure, but I had the impression from the conversation that the cylinders sometimes misfire. I will of course insist that it be fixed before I test drive it and have a PPI done. But I'm wondering if such a problem could have any long-term side effects, or if it might indicate (or hide) another problem. Any insight would be greatly appreciated!

POST 2Original post

Heh usually people don't take huge hits on resale price by not fixing simple/cheap things...

POST 3Original post

Except for the most expensive part of the car, the engine, the car is perfect. Other than that, Mrs. Lincoln, how was the play?

POST 4Original post

Is the car smoking? It could be a simple repair such as changing the sparkplugs and or coils.. Cleaning the MAF sensor too?

POST 5Original post

The simple question is - how did they determine there is a spark plug issue? CEL on? Diagnostics? Did it throw a code? Is it blowing smoke? Tailpipes black and sooty? Does it run rough? Take a simple OBDII reader and plug it in and check it out for any codes. Of course you are correct to insist it be fixed before you buy it and have a independent PPI done. Spark plugs can go bad, or get fouled, but if that is the only problem it is not major. It would help to know the model, year, mileage, etc.

POST 6Original post

Absolutely buy it fast. The dealer is probably way too busy to tackle a simple plug change. I think I saw a 997 TT they have for sale where the ad read; "Perfect condition 997TT, super cheap, doesnt run but only needs gas."

POST 7Original post

Quotes source post: 11352269

I'm still waiting to scoop up a car on the cheap with a seized alternator with the owner thinking it is a "bad engine".

POST 8Original post

Sounds like a cracked cylinder liner Sure car will run for awhile until that cylinder wall becomes aluminum marbles M

POST 9Original post

Very simple. Treat all sellers as sharks. As stated by others, if it was that simple they would have fixed it already rather than dealer with stories with potential customers.

POST 10Original post

My recent experience with a private seller (who would more likely be someone who doesn't know/care that they have a potentially easy fix on their hands and sells the car for cheap) who had a bad clutch taught me it's profoundly stupid to try and sell a car that has a noticeable problem unless you're a true believer in the greater idiot method of selling cars. I felt like I risked my life driving the car and there was absolutely no way I was going to buy it, because who knows how many other problems were hidden behind the "it's the clutch, only, seriously" veil.

POST 12 / ORIGINAL POSTEROriginal post

Quotes source posts: 11352269, 11353138

Yes, all obviously true, though I understood that they would fix this before I test drive the car, and I would not go to test drive the car unless I knew they had done so. So I'm not worried about noticing a problem while test driving it and stupidly believing it's just bad spark plugs. If I, or the shop doing the PPI, detect any significant problem, I won't buy it. What I'm worried is that bad spark plugs, despite the car being serviced at standard intervals, might (1) be a sign of another problem, or (2) cause another problem. Does anyone know if this might be the case? Thanks!!!

POST 13Original post

Quotes source post: 11356505

I completely understand your plan but I failed to convey one thinking. You mentioned the engine has misfires sometimes. My concern is the misfire may not show up at the conditions during PPI. So even if it passed with flying colors at the time of the PPI, you may still have problems down the road. The words "intermittent misfires with no codes" will send chills through the spines of most tech... Just my 2 cents.

POST 14Original post

In my opinion, if possible, it would be prudent to test drive the car to see the extent of the miss fire, then you would know what to look for on the second test drive after the "fix". If it shows a code showing a cylinder misfire, it picks that up from the crankshaft slowing down when that cylinder is supposed to be adding push to the crank. A bad sparkplug, a bad injector, coil, bad head gasket etc can cause the same miss fire symptom and code. The code, if the engine has OBD2, will tell you which cylinder is not producing power. As stated above you have to find the cause of the miss fire and address that with an application of dollars.

POST 15Original post

Quotes source post: 11352235

Run away. I've observed at least one Porsche dealer when it gets a car in either as a trade in or via a Porsche auction, it addresses any obvious issues. For instance I have seen a Cayman come in with a slipping clutch. No way the dealer would put this car on the lot with this condition and tell a buyer the car is perfect it just needs a clutch. The dealer had one of its techs replace the clutch. I've seen tires replaced, brakes done, and so on so the car when it arrives on the lot or in the showroom has no outstanding issues and can only leave a prospective buyer with a positive impression of the car after a test drive. Encountering a used car on a dealer lot with a slipping clutch would be bad enough but one with misfires that are attributed to something as easy to address as spark plugs? BS. Run away.

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