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  #1  
Old 07-25-2007, 08:03 PM
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Posts: 15
help with 90 benz 500sl

got 90 benz 500sl
couple things
1. the car has problem starting some times
when warm
have changed fuel filter, fuel distrabutor, injectors
so far but still same
2. the soft top when closing comes up to about half way and stops
doesnt close
any body with any idea please let know
thanks
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  #2  
Old 07-25-2007, 09:07 PM
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Quote:
Originally Posted by mercedez500sl View Post
got 90 benz 500sl
couple things
1. the car has problem starting some times
when warm
have changed fuel filter, fuel distrabutor, injectors
so far but still same
2. the soft top when closing comes up to about half way and stops
doesnt close
any body with any idea please let know
thanks
More than likely the fuel pump check valves and or fuel pressure accumulator has gone bad. It sounds like the fuel pressure is leaving the fuel distributor and is heading back to the gas tank. As far as the soft top goes it sound like one of the limit switches has gone bad but would need a scanner to confirm.
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  #3  
Old 07-26-2007, 01:25 AM
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Posts: 15
ok

cool

going to change both the fuel pumps
hopfully that would get rid of the problem....
see what i dont understand is that when it is cold it starts fine
but when the car is warm
and u try starting it after hour or so it takes few cranks to start????
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  #4  
Old 07-27-2007, 03:25 PM
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Join Date: Jun 2003
Location: Chesapeake,VA
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Quote:
Originally Posted by mercedez500sl View Post
cool

going to change both the fuel pumps
hopfully that would get rid of the problem....
see what i dont understand is that when it is cold it starts fine
but when the car is warm
and u try starting it after hour or so it takes few cranks to start????
no no no!! Don't change the fuel pumps. Just change the check valves that screw onto the end on the fuel pumps. Also don't forget the accumulator. Before you go and buy any parts you might want to check to make sure that the fuel distributor is not the cause. You can use a pin light and look down the throttle body for any fuel puddles sitting in the bottom of the intake manifold!!
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DRIVE HARD-DRIVE FAST-DRIVE TO GET THE HELL OUT OF MY WAY.

1986 190E 2.3-16 Pearl Black!!
1987 190E 2.3-16 Smoke Silver!!
1986 190E 2.5-16 Pearl Black!!
2004 CLK 500 Cabrio Designo package!!
1994 E320 Cabrio Red with black top!!
1985 500 SEL Anthracite Grey !!
2011 Subaru Impreza STI 380HP (Yeah Baby)
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  #5  
Old 07-27-2007, 05:48 PM
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Question

Quote:
Originally Posted by BENZ TEK View Post
no no no!! Don't change the fuel pumps. Just change the check valves that screw onto the end on the fuel pumps. Also don't forget the accumulator. Before you go and buy any parts you might want to check to make sure that the fuel distributor is not the cause. You can use a pin light and look down the throttle body for any fuel puddles sitting in the bottom of the intake manifold!!
How to check these valves???
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  #6  
Old 07-31-2007, 09:33 PM
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re: 500sl

ok changed the check valves but still hard time to start
any body with any more sugustions
please let know
thanks
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  #7  
Old 08-01-2007, 08:27 AM
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The fuel accumulator is mounted next to the fuel pump package. That device stores fuel pressure for hot re-starts.

The only real way to see if that is the problem is to connect a fuel pressure guage & see if the pressure bleeds off when you shut the engine off.
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