Author Topic: my m42 wont start. help! (Read 4673 times)

mrhinton · « **on:** December 05, 2008, 04:13:57 PM »

my m42 wont start. this is a video of the sound it makes. driviing down the street it sputtered. then. this. please help!

http://www.youtube.com/watch?v=qIP8YuvFuQ8

http://www.youtube.com/watch?v=ixIYW5RmStM

EN318isPDX · « **Reply #1 on:** December 05, 2008, 05:02:21 PM »

mrhinton · « **Reply #2 on:** December 05, 2008, 05:02:58 PM »

but i smell fuel coming out of the exhaust!

EN318isPDX · « **Reply #3 on:** December 05, 2008, 05:04:08 PM »

mrhinton · « **Reply #4 on:** December 05, 2008, 05:09:49 PM »

moderately new fuel filter. bought in july.

EN318isPDX · « **Reply #5 on:** December 05, 2008, 05:17:48 PM »

mrhinton · « **Reply #6 on:** December 05, 2008, 05:26:51 PM »

new pump too.

bearsbmw · « **Reply #7 on:** December 05, 2008, 05:58:36 PM »

check fuel pump fuse or relay

mrhinton · « **Reply #8 on:** December 05, 2008, 06:23:05 PM »

do you know which relay is for the fuel pump?

JP 91iS · « **Reply #9 on:** December 05, 2008, 08:01:16 PM »

Here's a picture of the fuel pump relay location

There's a lot of good test procedures in the Bentley. First make sure you're getting spark and then make sure your fuel pump is working.

What kind of work have you done on it recently before the problem?

mrhinton · « **Reply #10 on:** December 05, 2008, 08:09:14 PM »

like i said there is a new fuel pump in there. i swear it sounds like spark plugs but im unsure. no special work was done on it really. im going to check the fuel pump relay right now.

mrhinton · « **Reply #11 on:** December 05, 2008, 08:14:43 PM »

nope. not the fuel pump relay.

mrhinton · « **Reply #12 on:** December 05, 2008, 08:20:07 PM »

how can i tell if there is a spark or not?

nomad · « **Reply #13 on:** December 05, 2008, 09:34:54 PM »

get a lighting spark plug wire tester (harbor freight) and disconnect one wire at a time, put it in one of the wire ends and crank it over.
Change spark plugs, see if there is oil or water or a mix in the cylinders.

nomad · « **Reply #14 on:** December 05, 2008, 09:40:16 PM »

Also, check all your electrical connectors in the engine bay. You could have a plug that fell out, maybe wasn't all the way in.

Did you mess with the spark plug wires and put them back incorrect? (probably not eh)

ICV connected correctly? It has an electric plug on it too