39 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHSmelly cold startup
Leading reported evidence
Clean injectors
Performed · outcome unconfirmed
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 performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
It is recommended by wiser gentleman than myself on this forum to not use rebuilt or cleaned injectors.
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Suggestion
, I'm not aware of any methods beyond checking flow rate with PIWIS / Durametric, or taking them out of the car and sending them to a place that tests and repairs injectors.
Leading evidence: 'Clean injectors' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'cats and/or secondary air injection' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check flow rate' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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 performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
The "clip" that is installed, is actually more of an assembly line aid to keep the injectors in the rail untill it can be installed on the assembly line.
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 performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
I had my chains and pads replaced and I haven't noticed the smell since.
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 performed work without a confirmed outcome
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Performed · outcome unconfirmed
Once changed, the time to not worry about them gets reset back to 15 years or so.
Replace their injectors as preventative maintenance?/quote]
Performed · outcome unconfirmed
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.
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Performed · outcome unconfirmed
[QUOTE=philbert996;17037305]Has anyone replaced their injectors as preventative maintenance?/QUOTE]
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check flow rate
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
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Suggestion
, I'm not aware of any methods beyond checking flow rate with PIWIS / Durametric, or taking them out of the car and sending them to a place that tests and repairs injectors.
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
The "clip" that is installed, is actually more of an assembly line aid to keep the injectors in the rail untill it can be installed on the assembly line.
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 injectors (as recommended above) seem like a good place to start - if they're leaking down pressure/fuel into the cylinders after you shut the car off it's bad for several reasons besides smelling bad on startup.
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.
39 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: 20261026T083035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My 2002 C2 runs like a swiss watch with 180,000 kms on it, but the stink of petrol on a cold start really annoys me.
Reading lots of the Interweb tells me its extra fuel to 'fire up the cats'. Replaced the 20 year old O2 sensors , hoping it would help.......nope.
We have no emissions rules round here, so I can remove cats if I like, but where do I find a simple map/tune to install using my 'genuine' PIWIS?
or any other suggestions??
Order 6 new injectors and replace.
https://www.pelicanparts.com/More_In...606-122-00-M14
Just giving you this link so that you have the correct part #. You need the white injector for a 2002. It is recommended by wiser gentleman than myself on this forum to not use rebuilt or cleaned injectors.
Mine never smells like fuel on startup and i'm sure it's running similar startup maps as yours. The injectors (as recommended above) seem like a good place to start - if they're leaking down pressure/fuel into the cylinders after you shut the car off it's bad for several reasons besides smelling bad on startup. Order up those new injectors right away - your engine/cylinders will thank you
Has anyone replaced their injectors as preventative maintenance?
I watched the video series on bore scoring and think it might be a good thing to do before they fail
[QUOTE=philbert996;17037305]Has anyone replaced their injectors as preventative maintenance?/QUOTE]
Yes, injectors should be a PM item, 20K miles or 5 years?. At a minimum, a leak down test annually?. Totally agree from available data that that injector health is part of the bore scoring problem.
I saw that, but that's not a job I would do myself and I don't know if my indy would take the time to modify them. On a side note, I don't know if this is related so don't flame me if it isn't. I noticed a fuel smell, not at start up but after driving for a while. My cam deviations were out of spec. I had my chains and pads replaced and I haven't noticed the smell since.
Yes and yes. Can't remember what threads covered the details. Think these photos are also in my build thread.
Sharpie mark showing where to cut.
Mod completed.
Is it the smell of unburned petro, or the smell of incomplete combustion of mostly burned petrol? If the latter, then I would suspect cats and/or secondary air injection.
The 996.1 injector is an "EV-1" design, the 996.2 injector is an "EV-6" design BUT still has an EV-1 wire connector.
The 996.2 injector flows a little more than the 996.1 injector, but the 996.1 was designed to run "no ethanol" fuel, so with the 10% ethanol laced fuel that is all that's available, the 996.2 injector is actually a better / more ideal / close to factory flow than the 996.1 injector for 996.1 cars.
The "clip" that is installed, is actually more of an assembly line aid to keep the injectors in the rail untill it can be installed on the assembly line. Many car lines for years used these same injectors with no clips, once installed they could not "fall out". I would suppose it could also be a safety item if perhaps you were in a bad enough accident to where the fuel rail was knocked off the engine, it "mite" help prevent a leak.
It`s a safety feature not just an assembly aid. If the fuel rail bolts ever back out, the injectors would stay in place instead of popping off under fuel pressure.
[QUOTE=Imo000;17043236]
Yes! I am kidding and I hope no one takes those numbers seriously other than to think about what might be a realistic PM for older injectors. I did try to pose the numbers as questions. Apologies if that didn't come across.
Many threads bring up issues about injectors. They've been implicated as part of the bore scoring issue. All of them that haven't been replaced yet are really old. Is it sufficient to just run a leak down test every so often or are they cheap enough to just change out when you are worried about them? Once changed, the time to not worry about them gets reset back to 15 years or so. Here's a thread from almost 2 years ago that discusses the testing difficulty.
https://rennlist.com/forums/996-foru...iscussion.html
. Maybe it's best to just change them and be done.
I have no idea but I do know that those clips are more than just assembly aid. They are found on pretty much every other engines ever made with similar injectors.
Yeah I was taught that a cold engine deliberately feeds unburnt fuel to the catalytic converters along with air from the Secondary Air Injector to warm them up faster as an emissions thing. (Happens in all modern gasoline engines.) If you're still smelling fuel from the exhaust after it's warmed up and driven a good distance, let's call it 15 miles, then I think it's fair to say you are running rich in general.
@c didy
, I'm not aware of any methods beyond checking flow rate with PIWIS / Durametric, or taking them out of the car and sending them to a place that tests and repairs injectors.
After a long period of sitting (couple of hours or more) extended cranking time before the engine fires up or when the engine starts but takes a few seconds for a cylinder or two to come alive is a good indication of a slightly leaking injector. Also, the oil can smell like gas too.
