How to troubleshoot Porsche 911 mechanical fuel injection?
This project will give an overview of the MFI system, and also some pointers on tuning and adjusting it. For more information, it is recommended that you consult the factory workshop manuals, or if you can find it, the Porsche technical bulletin “4532.20 Check, Measure, Adjust” for the mechanical fuel injection system.
Why does my Porsche 911 have oil starvation problems?
As a result of the lower oil holding capacity and other factors, the M96/M97 engines tend to suffer more from oil starvation problems, particularly during high performance driving. There are a few things you can do to protect against oil starvation problems. Firstly, be sure that your oil level is always at the high-level mark of your dipstick.
Can a Porsche be 0 to 60 in a quarter mile?
There are a great deal of factors that affect the Porsche cars 0-60 stats, so different sources may test the same vehicle and each may arrive at a unique 0-60 mph and quarter mile result. Zero to 60 times does not guarantee the accuracy of any of the Porsche.
What causes a Porsche 911 engine to wobble?
The wobble occurs at the bottom of the stroke and results in the piston skirt dragging against the cylinder wall thereby scoring the liner. More recently, this issue has also been seen on the later engines. An early telltale sign can often be one exhaust tailpipe being more sooty black than the other.
What to do if you have a problem with your Porsche 911?
If your 911 has mechanical issues that don’t appear here, simply drop us an email via the forms or pop-up contact and we’ll do our best to share a solution with you. Clicking on a heading gives you more detail.
The wobble occurs at the bottom of the stroke and results in the piston skirt dragging against the cylinder wall thereby scoring the liner. More recently, this issue has also been seen on the later engines. An early telltale sign can often be one exhaust tailpipe being more sooty black than the other.
When to replace CoV solenoids on Porsche 911?
Porsche has used the COV in many circumstances throughout the 911 chassis, so if you have a failure related to a mechanical device controlled by vacuum, look for a failure in the COV solenoid in the system first. Most recently, the 991 cars have had all of their COV solenoids replaced in a maintenance campaign.
What causes smoke at the start of a Porsche 911?
The smoke at startup can also be caused by a air oil separator (AOS) that is going bad but not completely failed yet. The M96 and M97 engines are famed for cylinder scoring – deep gauges in the cylinder liner, usually associated with a knocking noise and eventually catastrophic engine failure.