Lil754boy

What will cause my E63 not to start after changing spark plugs. I had an oil leak on the passenger valve cover. i decided after i got into the job to replace the spark plugs. i completed the job and now the car will not start. Any help would be appreciated. Will the wrong plugs cause the car not start? I purchased the Denso as that was all available in the are today. Denso FXE22HR11 3442

skylinrcr01

Is it trying to crank? A no start is kinda vague. Did you remember to reconnect the fuel rail?

Lil754boy

It will turn over and attempt to start

Lil754boy

I only did the passenger side, did not have to disconnect the fuel rail

hayseed

iTrader: (2)

the wrong plugs wont cause it not to run,, the car would at a minimum run rough , you must have disconnected something or broke a wire during disassembly/assembly -- retrace what you did and look for disconnected clip/harness connection

loungn14

triple check that you seated the plug wires all the way

skylinrcr01

Did you plug the coil packs back in? Reseat the plug wires like eurocharged recommended.

Lil754boy

I think I found the problem. I found a wire jammed between the head and the valve cover. I removed wire and check fuse box and found one fuse blown. I will get a fuse in the morning and try her out again. I am looking for a fuse box legend so I will know what fuse is blown.

rapidoxidation

You should find a fuse chart on the passenger compartment fuse box door. It's on the driver's side panel that the door closes against. Check your owner's manual for the exact location. If you don't have an owner's manual, find yours here:
https://www.mbusa.com/mercedes/servi...owners_manuals

FunkTron

seen something similar to this with a 1991 4runner.
Pinched wire between the head and valve cover caused intermittent shorting of the alarm system.

Imagine having an intermittent kill switch (always when you don't want it).

Lil754boy

I figured it out and will post pictures in the morning.