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Old 03-04-2011, 08:14 AM   #1
haze89
Scooby Newbie
 
Member#: 275036
Join Date: Feb 2011
Default Engine No- star issue

I have a 1995 Impreza L 1.8L 5-speed manual AWD who's sometimes its engine fails to start. After letting it rest a while it will start and run normally. The ignition coil is working good because while the engine running I disconnected each spark plug wire and they all have a strong spark.

This is what i've done so far:
Replaced spark plugs
Replaced spark plug wires
Replaced fuel filter

I hooked up a fuel pressure gauge to the system and is giving 30psi, specs says it is supposed to do about 26-30 psi. But since then I haven't had the no-start issue until this morning. It failed to start, I open the hood and the gauge read 20 psi, I turn the key OFF then ON and I heard the fuel pump relay activating, I went back under the hood and fuel pressure was at +30 psi. Finally I cranked over and over and it wont start, fuel pressure at this point was at 15 psi. I turn OFF and ON the ignition then I had almost 40psi, crank it and the engine ran normally and fuel pressure at steady 30psi. Now the question is....Is it normal to have 15-20 psi after cranking the engine over and fail to run?? Is is possible the fuel pump to fail some times? After the engine is running it continue to do it normally, although some time I have hesitating issues when I let the engine reach like 500rpm when taking off in 1st gear
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