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Originally Posted by BS13
Well, I wished I had a fuel pressure gauge. I got the readings from both the auto electrician and the last mechanic. In both cases the static pressure (no engine running) was nailed at 41psi. The mechanic also had a reading with the engine running. I was trying to stay out of his way so I could see exactly what the reading was. I think it may have been in the range of 28-33 psi but don’t hold me to that. The mechanic suggested and he admitted he was guessing that it could be the fuel pump because he had seen them do weird things on other cars. But as the pressure seemed ok I passed that off.
I’ll try the return line pinch test to see what it does. That sounds like an interesting possibility. Gotta locate a pressure gauge. It might be simpler to just replace the old pressure regulator.
Thx.
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Well, this morning I went back to the mechanic and we tested the fuel pressure once again. It read normal although on the high side, that is 41psi with out the vacuum hose connected and about 30psi with the vacuum hose connected - of course, the engine was idling.
Then I crimped the return line and the fuel pressure jumped to 65psi. At idled the engine stumbled and almost died but didn't. It still seemed to me that this is what is supposed to happen to the fuel pressure with a pinched return fuel line. I bought a brand new pressure regulator, installed it and the car still runs poorly.
This thing is running so badly that I'm lucky to get across an intersection after being stopped by a light. Sometimes, I can't get the engine beyond idle when I ease on the gas.
Oh , my check engine light is coming back on. Code 43.
Thx for the suggestion, any others?