C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

still issues

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Old Apr 2, 2007 | 11:12 AM
  #1  
wjmac40's Avatar
wjmac40
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Intermediate
 
Joined: May 2006
Posts: 38
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From: Gilbert Az
Default still issues

My 1989 vette is having problems, hard starting, low idle bucking, and popping.When RPM picks up the car seems to run smooth.Fuel milage has dropped to between 12 to 14 mpg.
So far changed fuel filter
pinned computer got code 12(all clear)
checked timing
Checked for fuel leaks (NONE)
looked it over for frayed wires
New thing it did yesterday after running small trip 10 mins
wouldn't start checked the fuel valve on on rail and had only air come out for 2 seconds like it was starving for fuel or fuel boiled?
Will stop at A/Zone today to check fuel pressure
Does anyone have other suggestions?
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Old Apr 2, 2007 | 11:33 AM
  #2  
vinnies87's Avatar
vinnies87
Le Mans Master
 
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
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Sounds like fuel pump with only air in the injector rails...
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