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+--- Thread: Stall after couple seconds of start up (/showthread.php?tid=2243)
Stall after couple seconds of start up - W116Lorinser - 02-08-2011
very weird only has been happening in the past 2 months on my w116 300sd om617 everything is new in the car the battery, glowplugs, oil, all filters, recent valve adjustment etc.
The car starts up right away but i have to hold the gas pedal down for a couple seconds before the engine fully turns over and runs perfectly.
If i dont hold the pedal down it runs for a second or two then stalls and shuts off. Do i need to adjust my idle higher or something? or is this normal for a older diesel in this cold weather.
RE: Stall after couple seconds of start up - DeliveryValve - 02-08-2011
How much of the pedal are you pressing down?
Usually when you have a start and stop, it means you have an air leak somewhere.
.
RE: Stall after couple seconds of start up - dieselboy - 02-08-2011
Is your primer pump leaking?
Edit: ^ whoa! New sig pic ftmfw!!
RE: Stall after couple seconds of start up - W116Lorinser - 02-09-2011
No primer pump leaks. Everything in engine in pretty much brand new.
I have to depress pedal for about 10 seconds or less then it runs perfect as usual.
I use delvac 15-40 non syntetic. Since its been real cold this winter in the northeast can this be a problem. I was thinking of changing to mobil 1 5-40 turbo diesel formula today since im due for a oil change.
The cars a 1980 with close to 200k. Can this be normal with a high mileage engine?
RE: Stall after couple seconds of start up - dieselboy - 02-09-2011
My car does the same thing when it's cold but I think my primer has a small leak allowing air into the system.
RE: Stall after couple seconds of start up - DrewGerhan - 03-09-2011
My car does the same thing but only after a long drive (hour or more). If I go to restart quickly after shutting off I have to floor it for the first seconds to keep it running or it will sputter and die. If I open the gas cap there is a huge whoosh of air (vacuum). After this it will start normally until the next long drive.
I assume its my tank vent clogged up somewhere. Just haven't really dug into it much yet to verify.
RE: Stall after couple seconds of start up - larsalan - 03-09-2011
(03-09-2011, 03:10 PM)DrewGerhan My car does the same thing but only after a long drive (hour or more). If I go to restart quickly after shutting off I have to floor it for the first seconds to keep it running or it will sputter and die. If I open the gas cap there is a huge whoosh of air (vacuum). After this it will start normally until the next long drive.
I assume its my tank vent clogged up somewhere. Just haven't really dug into it much yet to verify.
The vent/valve is a bell looking thing. Could be clogged it is under the car.
![[Image: snap_10.jpg]](http://i88.photobucket.com/albums/k176/larsalan/snap_10.jpg)
RE: Stall after couple seconds of start up - DrewGerhan - 03-09-2011
I did look at that and take a coat hanger to it. Didn't seem to be stuck and no debris came out. Thats all I've done though.
RE: Stall after couple seconds of start up - W116Lorinser - 03-10-2011
(03-09-2011, 04:46 PM)DrewGerhan I did look at that and take a coat hanger to it. Didn't seem to be stuck and no debris came out. Thats all I've done though.
Wow i never paid attentioN to that part. Where is it located exactly. I have a 300sd w116 chasis.
Thanks
RE: Stall after couple seconds of start up - larsalan - 03-10-2011
on my w123 there are 3 lines coming out of the fuel tank. All were rusted and leaking.
1 supply
1 return
1 for that vent
the valve opens both directions under minimal pressures.
the valve was like under the rear seat floor pan.