S430 want always start
Thread Starter
Newbie
Joined: May 2018
Posts: 3
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2007 S550
S430 want always start
This is my first Post, hope I am doing it correctly. However I need some help.
2005 S430 starting problem, have replaced: Crankshaft Sensor, Fuel Filter and Fuel pump. Fuel pressure normally reads approx 53 lbs. However during no start conditions fuel pressure drops to zero. If I let it set for a while it may come back to a normal reading and start. usually it will hold a normal reading, when the vehicle is shut off for a long period of time. However some times when starting, it has normal pressure but it will immediately drop to zero and of course it want start. Any suggestions, thanks. Winston
2005 S430 starting problem, have replaced: Crankshaft Sensor, Fuel Filter and Fuel pump. Fuel pressure normally reads approx 53 lbs. However during no start conditions fuel pressure drops to zero. If I let it set for a while it may come back to a normal reading and start. usually it will hold a normal reading, when the vehicle is shut off for a long period of time. However some times when starting, it has normal pressure but it will immediately drop to zero and of course it want start. Any suggestions, thanks. Winston
Thread Starter
Newbie
Joined: May 2018
Posts: 3
Likes: 0
2007 S550
S430 starting problem
Sometimes it will start normally, at other times it attempts to start but sputters then shuts off , I have monitored it with pressure gauge during these times. Sometimes when you turn the key on the pressure reads normal, then when you continue to the crank position the pressure drops to zero, this is when it sputters and shuts off.
