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jwasbury jwasbury is offline
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Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,612
Quote:
Originally Posted by Miguel Antonett View Post
Your issue appears fuel mix related. Difficult to troubleshoot w/o an a/f ratio gauge. Get one (a decent one under $200) and then play.
a/f gauge is a good thing, but I would argue that the first tool in the box to reach for is a set of CIS fuel pressure test gauges. Best price on a suitable set of gauges I have seen is from JC Whitney.

For these kind of running problems, following the basic "tune-up" list will often reveal the issue:

1) verfiy CIS system pressure, cold control pressure, warm control pressure, (and with a mity vac you can also check enrichment control pressure).
2) verify fuel delivery volume is within specification
3) verify ignition timing is correctly set

if you are not familiar with CIS and its components, and basic troubleshooting of the fuel system read this:

http://jimsbasementworkshop.com/CIS/

this is not specific to turbo cars, but the principals are the same
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Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930

Last edited by jwasbury; 06-06-2013 at 06:04 AM.. Reason: add link
Old 06-06-2013, 06:02 AM
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