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Matt, Engineer - BEng Hons
Category: Porsche
Satisfied Customers: 20397
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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Recently I am having a hard time engaging the reverse gear

Customer Question

recently I am having a hard time engaging the reverse gear on my 997s
JA: How many miles are on the car? Have you noticed any fluid leaks lately?
Customer: 47k, no leaks
JA: What is the model/year of your Porsche?
Customer: 2005 carrera s
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: i have been doing research
JA: Anything else you think the mechanic should know?
Customer: nothing really...all forward gears shifts fine and the reverse would sometimes engage
Submitted: 2 months ago.
Category: Porsche
Expert:  Matt replied 2 months ago.

the first thing to do is bleed the clutch hydraulics and ensure that you replenish the all fluid in the system and get any trapped air out

I favour having a clear hose from the nipple to a jar 1/2 full of old fluid and with the nipple closed your assistant pushes the pedal up and down a few times, then holds it down whilst you then crack open the nipple and close it again whilst fluid is still flowing.

If this doesn't help then next check the gear linkage for any worn bushes or pivots as any lost motion means reduced effort at the gearbox and replace as necessary. Ideally have your assistant move the gear lever with you watching the linkage and see if you can spot where there is any excessive play or lost motion.

Then check gearbox oil levels and if its not been changed in the last 20K miles then drain it off and fill with fresh. I can strongly recommend the use of Castrol Syntrans 75W90 (was called SMX-S) as I've known it help with shift issues on many manual gearboxes

od for many years without incident.

Work your way through each possible joint one at a time and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying 'wand' and allow a direct blast of gas into each area, especially those difficult to reach with large implements.

It’s also worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a poorly pump will all result in insufficient fuel being delivered to the engine

Expert:  Matt replied 2 months ago.


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