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good morning my name is ***** ***** I will assist
the first thing I would do is check the fuel pressure. it sounds like you may have a failing fuel pump. you can rent a tester at a parts store to verify.
have you done this yet???
ok, 35-45 is the spec
is this with the engine running or off??
yes, it could. slao, did you change the fuel filter??
did you see the condition of the fuel???
if the pressure is good, although it is borderline, I am wondering about the injectors. adding cleaner does nothing for cleaning.
ok, how about the ignition timing????
Hi there. Different expert here.
The key to this diagnosis is to first determine what's missing when the engine won't start; is it fuel pressure, injector pulse or ignition spark.
I do understand that many parts have been replaced, but we can't overlook the possibility of an intermittently bad connection somewhere causing this no-start condition.
Can you check that and let me know?
OK. You are now working with a different expert.
Let's not get ahead of ourselves. Instead, let's find out what is missing when the engine won't start. Once we know that, then we'll go ahead and pinpoint the issue.