Car sat for a few years but now has been driven for a year. The engine cranks good and has been starting quickly. Suddenly it has begun to require some longer cranking time and hard start as if not getting enough fuel. Also, sometimes it still starts on first try but upon random, but often occasions it requires several tries before it finally starts.
The number of tries it takes is also a random amount during which, engine may begin to run briefly and then go back to just cranking by starter as if it's not getting enough fuel to stay running. What has me confused is that, so far, it always eventually starts and then runs fine for as long as needed. Only the starting is being affected.
I can hear the fuel pump in gas tank pump up and stop when turn ignition on; I can see visible fuel spray into throttle body when cranking but I can’t say yet if it's a good enough spray pattern. Fuel filter seems to be clean. No outlet valve to check fuel pressure so, have not done so yet.
I’m assuming soon it may stop starting but, to date, since it always finally starts and runs fine, can I conclude its getting fuel and fuel pressure and spark? It's got a fairly new ignition control module when recently it had no spark. Crank sensor and coils are not new.
Or does it take more fuel to start than to run? I assume there is no partial spark problem just on starting.
Otherwise, all I can think of is if the fuel injector nozzle spray pattern is not atomized enough for an easy start and when the engine gets running, it can then use the fuel that way? But evidently, it's not filing out the plugs on starting?
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Tuesday, December 28th, 2021 AT 7:30 PM