takes a couple of tries to start motor???
Thread Starter
Junior Member
Joined: Dec 2008
Posts: 53
Likes: 0
none yet
takes a couple of tries to start motor???
my e55 takes a couple of tries to get it to start and when it does go it kinda stumbles to life. once its running, it idles fine and runs good. i have changed the CPS with no change and i cant smell any fuel leaks. has anyone had a problem like this? also, if i cycle the key around 4 or 5 times before i start it, it will light on the first go. im totally confused on this one.
Banned
Joined: May 2010
Posts: 1,209
Likes: 188
S65
If you cycle the key a few times before it fires on the first start, I'd suspect low fuel pressure.
Leaking injector pintle, dying fuel pump, or a bad anti drain valve... dunno if your car has one of them.
Next time, don't cycle the key. Turn it to position 2, and let it sit there for a few seconds (5-10) before starting. See if it starts on the first try.
Leaking injector pintle, dying fuel pump, or a bad anti drain valve... dunno if your car has one of them.
Next time, don't cycle the key. Turn it to position 2, and let it sit there for a few seconds (5-10) before starting. See if it starts on the first try.
Thread Starter
Junior Member
Joined: Dec 2008
Posts: 53
Likes: 0
none yet
thanks for the info, ill give it a try and update. i took out the rear seat and cycled the key and i could hear and feel the passenger side pump come on but the driverside didnt do anything. what is the purpose of the driverside pump?
MBWorld Fanatic!
Joined: Jan 2004
Posts: 7,092
Likes: 13
From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
So I spent some searching and just kinda came up with kinda the same stuff.
Couple quick points. I am all about covering the basics first.....any chance you snagged a bad tank of gas somewhere?
Once that is ruled out....how low is your tank right now? Found some of the guys that had similiar trouble only had it happen when tank was getting low.
Finally, check your cam sensor. It is in the front of the engine on the left side of the car as you stand in front near top of the engine. Quick swap out so before you start paying for insane price fuel pumps, that is worth a swap.
You sure you installed the crank sensor correctly? Just checkin. Good idea after all these to at least pop that rear seat out and have a peek at the fuel lines. Once you figure it out once, it's cake to pop out.
Here is the post with some good stuff on it.
Keep us posted.
Couple quick points. I am all about covering the basics first.....any chance you snagged a bad tank of gas somewhere?
Once that is ruled out....how low is your tank right now? Found some of the guys that had similiar trouble only had it happen when tank was getting low.
Finally, check your cam sensor. It is in the front of the engine on the left side of the car as you stand in front near top of the engine. Quick swap out so before you start paying for insane price fuel pumps, that is worth a swap.
You sure you installed the crank sensor correctly? Just checkin. Good idea after all these to at least pop that rear seat out and have a peek at the fuel lines. Once you figure it out once, it's cake to pop out.
Here is the post with some good stuff on it.
Keep us posted.
Member
Joined: Mar 2008
Posts: 180
Likes: 0
From: LA/OC
E55
Crankshaft position sensor 
about a $600 repair.
or
https://mbworld.org/forums/w211-amg/...-2004-e55.html
about a $600 repair.
or
https://mbworld.org/forums/w211-amg/...-2004-e55.html
Trending Topics
Thread Starter
Junior Member
Joined: Dec 2008
Posts: 53
Likes: 0
none yet
so just wanna say thanks for your help, i just got a CEL and said fuel tank pressure sensor. so next question is, has anyone changed this? i know where it is but cant tell what part to change. i'm hoping its not the whole top piece.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
