way rich....

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NOTSOFAST

Member
Joined
Oct 23, 2001
Messages
432
well I took GN out to start tuning it and get it ready for the track. But I have noticed that it is running really rich at idle and cruise. when at idle sm shows 800 and ubove and when cruiseing numbers are over 800 and blm's are at 105. I've checked for vaccum leaks, exhaust leaks and have found none. also noticed that boost wouldn't climb over 20lbs. on one wot run from a stoplight, my fuel pump fuse blew. non the less, what or where should i start looking. will be getting 2 o2 sensors on my day off, for both GN's.
 
What is your fuel pressure with the vacuum line off the regulator? Does your car have the fuel pump hot wire relay kit?
 
engine has been in for a few years now. it just recently started running to rich. I will know more once I install the o2 sensor.
 
When it happens again check the vehicle voltage. The alternator may be going bad and the voltage is going sky-high. This would make the fuel pump deliver a lot more fuel and possibly overtax the return line, making the fuel pressure also go up.

RemoveBeforeFlight
 
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