12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHFuel Injectors
Leading reported evidence
Replace engine
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
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1
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
Engine was replaced by Porsche under warranty @ 16,000 miles (in 2001).
Leading evidence: 'Replace engine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace engine' (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
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Suggestion
If you are planning on keeping the car, replace the motor with a Porsche supplied one.
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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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.
12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Pelican Parts: 1 discussions
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Generation: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
With the 996, the left bank is easier to work with when the engine is still in. The right bank is a totally different animal. Best to have your wrench do the work unless you have small hands and a LOT, and I do mean A LOT of patience.
Thanks guys! The car runs reasonable well and the problem seems to be intermitten for now. Just to clarify, I have 99-996 cabriolet with 75,000 miles. Engine was replaced by Porsche under warranty @ 16,000 miles (in 2001). So the engine has 59,000 miles. With #5 on the right bank (the more difficult side) I will take a long look at the task at hand before diving in. Thanks again, Bob
The code (P1315) is more frequent along with a rough idle. The car is drivable and smooth through the gears under normal conditions. I also noticed the 1 exhaust tip is blacker, meaning a rich condition?? Anyhow the machine is going in to see Dr. Porsche today.
Up date: Dr. P scoped the engine out and came up with a bad #3 cylinder looking at a stuck valve / broken spring as the source of my problem. Compression and leak down were very poor...engine is out and re-working the head. Electrically the engine checked out (injectors, ignition coils, plugs, harness).
Final Update: Stuck valve turned into a burnt valve (part of the valve is actually missing...pizza wedge). They want $10g's to re-do the head or $13g's for a re-built factory engine (complete w/ warranty) (by the way this would be engine # 3). Depressed is an understatement.....thinking of just selling. 1st and last Porche. Good luck to the other 996's, your going to need it. Bob A
might try a p salvage yard, and a independent porsche shop to do the work...... that will most likely be the cheapest route. if you decide to keep it. if not PM me..
Cheapest may not be the best. It's entirely up to you, but a Porsche reman engine has a two year warranty and a used engine has only the warranty the seller offers.
If you are planning on keeping the car, replace the motor with a Porsche supplied one.
As it's a 99, you probably will need a clutch/flywheel (they don't come with the reman engine) and a coolant tank and update hoses.
I can imagine your anger but there is a place in newport beach called Auto Strausse Corp there rebuilt eng's are $6500 with one year warrenty talk to Robert nice guy [phone removed]) I have there eng for short time so far but still running great. GL
