Hard to start engine right away once shut down

[mazzo]

If i have hard time restart my engine within the first 2 mins after I shut down my car (and this happen regardless of engine temperature / outside temperature), what could be the reason?
Car always starts at morning, idle fine, no CEL.
Any idea?

[bankrupt]

Check Crank Position sensor first. It should read 500-550 ohms. I had similar symptoms till it refused to start at all.

[bankrupt]

Check Crank Position sensor first. It should read 500-550 ohms. I had similar symptoms till it refused to start at all. I bought Vemo CPS $57 @ ESC tuning. Ran on first try.

[Zambuzan]

I have the same problem. A similar thread concluded a weak/tired fuel pump.

[r-mm]

Also consider fuel pressure regulator. It is responsible for maintaining pressure in the rail when the motor is off. If it or any other part of the fuel system post regulator is leaking you wont have pressure when you turn the key. Pump only runs when cranking.


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[TobyB]

...and leaky injector(s) will flood it, too. Fuel pressure is a good test for this, too.

t

[dnguyen1963]

If all fails, do a smoke test. There is an aluminum elbow going into the throttle body that can be loose when the engine warmed up. This causes a vacuum leak and a difficult start. A lot of people just use JB weld to seal up the elbow.

[r-mm]

If all fails, do a smoke test. There is an aluminum elbow going into the throttle body that can be loose when the engine warmed up. This causes a vacuum leak and a difficult start. A lot of people just use JB weld to seal up the elbow.

+1 - I just cleaned my IAV and found this little fellow entirely loose...

[dnguyen1963]

Yep, that's the one.

[TobyB]

JB Weld it.

t