3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHporsche 996 3.4 c2 1999 misfire
Leading reported evidence
Check these two items
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 · Original poster
i would like to know the best diagnostic tool to diagnose the injectors and the variocam sensors i have good mechanical knowledge so with the correct tool and know how i could check these two items
Leading evidence: 'Check these two items' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check these two items' (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 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
They would also be able to recommend local independent shops for advice/help .
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check these two items
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 would like to know the best diagnostic tool to diagnose the injectors and the variocam sensors i have good mechanical knowledge so with the correct tool and know how i could check these two items
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.
3 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
hi im new here and would like some help with my 3.4 c2 cable throttle 996 1999 84k
i have a stutter hesitation misfire , not sure how to describe it at 2-3k lift off and coast you feel it more
i have changed maf plugs coil packs and o2 sensors air filter throttle body and oil and filter twice , all quality oem parts
i also feel the oil is becoming contaminated with fuel , i have been told possibly injectors or a variocam issue but if it is contaminating the oil most probably injectors
im sorry havent been able to code read it as i dont have a reliable porsche expert near or the time to visit the nearest . i would like to know the best diagnostic tool to diagnose the injectors and the variocam sensors i have good mechanical knowledge so with the correct tool and know how i could check these two items
if thats what may be the cause , i have no lights on the dash so im thinking mechanical issue
if i change injectors do they need programming or is it a straight swap and is the variocam easy to do also ?
thankyou for your help in advance , keen to get it sorted before it causes any damage .
im based in the uk also if you recomend a diagnostic tool . and also best place to buy it and also the injectors best place to buy
thankyou again in advance
stuart
Welcome . In the US the local auto parts stores will scan the car for free . Is that the case in the UK ? If it is get that done first . A DIY tool with a good history is the Durametric . It is a cable that works with a Windows based laptop computer and their proprietary software . There are stand alone handheld devices that can be purchased also .
If there is a local Porsche club that would be a good source for info . They would also be able to recommend local independent shops for advice/help . Good luck
U need a durametric or even some $100 scanners like a foxwell will do what u need. It will be good to see short fuel numbers and o2 sensors in graphs to try and see whats happening. Bad injecrors should show lean short term fuel conditions.
A sticking variocam seliniod will also cause a stumble and u can see it in the crank angle but that will usually throw a code.
Keep reading as there r many things to read and learn about these cars already posted.
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