The Ford Barn

Darrell S · 04-02-2021, 11:38 AM

I took the 48 out yesterday for a short drive, first time out this year. It starts right up, idles ok and doesn't miss. It did start surging some so I drove it on home ok. What causes surging, what should I check first?

51woodie · 04-02-2021, 12:46 PM

In my experience, if the surge is a gentle slow/speed up symptom, it is typically a fuel issue. It the surge is quick and jerky, that is generally an ignition problem. The causes can be many, so depending on what type of surge you have, work on that system. Check the whole system carefully, but only change one thing at a time, and test each change to see if the problem is solved.

Tinker · 04-02-2021, 01:16 PM

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Surging or stumble/bucking? Surging like a smooth loss of power or stumble/bucking like a miss or drop of power under load.

My guess is we are going to see a lot of posts about missing and stumbling fords now that they are out of the winter slumber. I'd try the MMO trick first off as it's cheap and does no harm.

Best of luck!

.

04-02-2021, 11:38 AM	#1
Darrell S Senior Member Join Date: Aug 2015 Location: Everett WA Posts: 346	Surging I took the 48 out yesterday for a short drive, first time out this year. It starts right up, idles ok and doesn't miss. It did start surging some so I drove it on home ok. What causes surging, what should I check first?

04-02-2021, 12:46 PM	#2
51woodie Senior Member Join Date: Apr 2018 Location: Chelmsford, ON Canada Posts: 528	Re: Surging In my experience, if the surge is a gentle slow/speed up symptom, it is typically a fuel issue. It the surge is quick and jerky, that is generally an ignition problem. The causes can be many, so depending on what type of surge you have, work on that system. Check the whole system carefully, but only change one thing at a time, and test each change to see if the problem is solved.

04-02-2021, 01:16 PM	#3
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,053	Re: Surging Sponsored Links (Register now to hide all advertisements) Surging or stumble/bucking? Surging like a smooth loss of power or stumble/bucking like a miss or drop of power under load. My guess is we are going to see a lot of posts about missing and stumbling fords now that they are out of the winter slumber. I'd try the MMO trick first off as it's cheap and does no harm. Best of luck! . Last edited by Tinker; 04-02-2021 at 01:22 PM.