Idling Problems
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Mountain Pass
Joined: Aug 2016
Posts: 173
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From: Meridian ID
Idling Problems
Well, time to dive in here on "La Bete."
I have a stock 1986 150 with a C6 behind a 5.8 H.O. 4V.
The problem confounding me at the moment, and the one that is most important is the idle.
A while back the old girl refused to start for a couple of days. This came out of the blue. Before this a cold start was 2 pumps, maybe a restart and gtg. Rough running till up to temp but then it is an old Ford... The idle was always inconsistent, when up to full temp and the ambient air temp was sufficient she purred like a kitten at idle. However, cold outside, not up to temp etc. it would switch from high idle to a low stuttering.
I had the carb rebuilt about 4 years ago and it wasn't perfect but it was good.
My problem is Maybelle gets me to work every day and winter is coming; I need her to idle so she can warm up and clear off the windscreen.
As it is now, two pumps, crank, two pumps, crank, two pumps, now she'll catch but I have to feather the throttle and she will finally idle once up to temp but again, it's either high idle or idling so low I have to pop it in neutral.
There you have it. Any suggestions?
We have a well respected carburetor shop here in town. I think a rebuild is beyond me.
Cheers
Dan
I have a stock 1986 150 with a C6 behind a 5.8 H.O. 4V.
The problem confounding me at the moment, and the one that is most important is the idle.
A while back the old girl refused to start for a couple of days. This came out of the blue. Before this a cold start was 2 pumps, maybe a restart and gtg. Rough running till up to temp but then it is an old Ford... The idle was always inconsistent, when up to full temp and the ambient air temp was sufficient she purred like a kitten at idle. However, cold outside, not up to temp etc. it would switch from high idle to a low stuttering.
I had the carb rebuilt about 4 years ago and it wasn't perfect but it was good.
My problem is Maybelle gets me to work every day and winter is coming; I need her to idle so she can warm up and clear off the windscreen.
As it is now, two pumps, crank, two pumps, crank, two pumps, now she'll catch but I have to feather the throttle and she will finally idle once up to temp but again, it's either high idle or idling so low I have to pop it in neutral.
There you have it. Any suggestions?
We have a well respected carburetor shop here in town. I think a rebuild is beyond me.
Cheers
Dan
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Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Dan, you're technically in the wrong forum, this here is for the 351M 351C and 400 (the 335-series engines) and 1986 would have a 351W (discussed here: Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - Ford Truck Enthusiasts Forums).
In any event, people are going to tell you to look at your choke... see if the stuff here helps:
https://www.ford-trucks.com/forums/8...ml#post7434602
In any event, people are going to tell you to look at your choke... see if the stuff here helps:
https://www.ford-trucks.com/forums/8...ml#post7434602
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