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stanghater

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Discussion starter · #1 · (Edited)
My 2000 Chrysler LHS with 160k miles on it has this consistent problem with ti and I believe it to be fuel related, specifically the fuel pump. If the car is cold (not the air temp, because this will happen in 20 degree cold or 100 degree heat) it will not start. Ill have to either pump the gas pedal or just hold it down while cranking to get it to start. which is usually followed by a poof of blue oil smoke out the back. After that initial start, I can park somewhere for 20-30 min and it will start right up. any thoughts?

EDIT: could be related, not sure. As I was cranking it and pumping the gas i head BOOOOM. i shut everything off and saw smoke emitting from the engine bay. Popped the hood and opened up to see everything relatively in its place, no liquids anywhere. the intake tube between the air box and throttle body had blow the top off of a little box around the curve there exposing a tube that had been separated. I dont know if this is a noise baffle or what, but the amount of pressure that was needed to do that is insane. Good ol duct tape fixed it for now.
 
...EDIT: could be related, not sure. As I was cranking it and pumping the gas i head BOOOOM. i shut everything off and saw smoke emitting from the engine bay. Popped the hood and opened up to see everything relatively in its place, no liquids anywhere. the intake tube between the air box and throttle body had blow the top off of a little box around the curve there exposing a tube that had been separated. I dont know if this is a noise baffle or what, but the amount of pressure that was needed to do that is insane. Good ol duct tape fixed it for now.
Sounds like the same cause (backfiring thru the intake) as in this thread: http://www.dodgeintrepid.net/showthread.php?p=2891025

The experts say bent valves or timing slipped
 
Discussion starter · #3 ·
Sounds like the same cause (backfiring thru the intake) as in this thread: link

The experts say bent valves or timing slipped
The no starting is a very common problem, happens everyday, at least once a day for about 3 years. This is the first time in 8 years that ive had that explosion, and mine was pre-throttle body, the guy in the link was post tb. You think bent valves or slipped timing would cause my starting troubles? after it starts I get great mpg and dont have and shuttering or anything weird like that. I really think its a fuel issue. It almost feels like its not getting enough fuel to start, hence why I have to pump or just hold the pedal down.
 
Yeah - I agree that the symptoms don't line up. I just don't know what would have caused the pressure in the intake tube like that.

However, if the pressure in the intake were to occur while you had the throttle open...

Maybe a leaking injector dumping fuel into its cylinder when it sits for a while, which would also empty out the fuel rail - so one cylinder is totally flooded, and the others are getting no fuel - until the fuel pump gets restarted.
 
Discussion starter · #5 ·
Yeah - I agree that the symptoms don't line up. I just don't know what would have caused the pressure in the intake tube like that.

However, if the pressure in the intake were to occur while you had the throttle open...

Maybe a leaking injector dumping fuel into its cylinder when it sits for a while, which would also empty out the fuel rail - so one cylinder is totally flooded, and the others are getting no fuel - until the fuel pump gets restarted.
hmmm thats a damn good theory
 
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