fuel pressure regulator
11-15-2009, 04:04 AM
#1
Racer
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Location: Grapevine TX
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fuel pressure regulator
ok i have a problem i go to start my car it takes 15 or so sec to start and when it does it smells heavily of fuel. opti is good as well as new plugs and wires. could it possible be the fuel pressure regulator im out of ideas. if i let it sit for just about 3 to 5 mins it starts just fine more then that it take around 15 sec or so and again smells highly of fuel. after started and driving on the hwy ect the engine runs just fine no problems nothing any ideas. im a young guy 23 love my vett but cant afford to take it to a shop any help would be grate thanks in advance. 1993 early vert.
Taylor T
Taylor T
11-15-2009, 06:58 AM
#2
Le Mans Master
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Scan it
ok i have a problem i go to start my car it takes 15 or so sec to start and when it does it smells heavily of fuel. opti is good as well as new plugs and wires. could it possible be the fuel pressure regulator im out of ideas. if i let it sit for just about 3 to 5 mins it starts just fine more then that it take around 15 sec or so and again smells highly of fuel. after started and driving on the hwy ect the engine runs just fine no problems nothing any ideas. im a young guy 23 love my vett but cant afford to take it to a shop any help would be grate thanks in advance. 1993 early vert.
Taylor T
Taylor T
My guess would be it is OPTI-related or possibly the ECM. But, that is why I recommend the scan first and check for codes.
P.
11-15-2009, 07:47 AM
#3
Le Mans Master
Autozone did away with the free scanning about a year ago. They also pulled their OBD-II rental scanner from their loaner program. Might be regional I'm not sure. Don't know about Pep-Boys.
11-15-2009, 09:01 AM
#4
Instructor
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Can you see fuel leaking anywhere? I recently had a fuel leak and it ended up being bad seals on the fuel rails. The o-rings that connected to the regulator had gone bad. If there is a leak, I wouldnt drive it
11-15-2009, 02:11 PM
#5
Racer
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I have looked carefully all over for an fuel leak and cannot find one thankfully. the only time you smell the gas smell is just for the first few sec or so, after that it runs fine no smell engine runs smooth and still has plenty of power
11-15-2009, 02:26 PM
#6
Pro
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fo like $40.00 tells me everyhting i need to know..
11-16-2009, 02:53 PM
#7
Burning Brakes
Check your fuel pressure. Stock reulators should be 43 psi with vaccum line off and around 7-9 lbs less with it hooked up. Also see if fuel is coming out of the vaccum line from the regulator. Check your engine codes to see if it has thrown one for too rich of O2 sensor. Not knowing how many miles you have on car or injectors of which some may be bad and getting poor atomization at combustion thus blowing the excess fuel out the back. For injectors, check with Jon Banner at FIC. O-rings do dry out and crack as mentioned in earlier post manily from heat and should show some visual signs of leakage even though the high temperature may evaporate it off when engine is hot, keep a fire extinguisher handy. Check all your connections from fuel tank and at the filter. Becareful if you break the lines loose around the filter as gas will flow from the lines (eyes) and do it with engine cold as it is so close to the exhaust.
