The Ford Barn

JT FORD · 05-19-2012, 04:19 PM

Anything to do about a sticking valve in 8BA engine at low idle. Runs good down the highway, but will almost stop at slow idle. Am running MMO oil in the gasoline, how about some in the oil??

ford1 · 05-19-2012, 04:54 PM

first thing is to run a compression check, you need to know which one is sticking, intake or exhaust, it may not even be a sticking valve, does the valve make a ticking noise? if its an intake mmo should help , if an exhaust i dont think it will be much help, you might try changing to one of the super slippery synthic oils

52merc · 05-19-2012, 09:38 PM

how slow the idle?? it dont sound like valve speed the idle up a tad

FLA48 · 05-20-2012, 09:27 PM

Did you use a vacuum meter to check if it is the valves and not something else? There was an animated post a week or so back that you could use to help pinpoint the problem.

Mac VP · 05-21-2012, 05:16 AM

This vacuum gauge chart will help on that test:

http://www.vanpeltsales.com/FH_web/F...auge-chart.jpg

paleot · 05-21-2012, 10:36 AM

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I had one sticking on my 8BA, just overhauled but not on the road yet! valve would stick after sitting for a month or so. I added 4 ounces of pro tec and have had no further problems. By the way the dealer told me I would have to drain it out to get the rings to seat properly.
Tony

05-19-2012, 04:19 PM	#1
JT FORD Senior Member Join Date: May 2010 Location: N.W. Iowa Posts: 306	Sticking Valve? Anything to do about a sticking valve in 8BA engine at low idle. Runs good down the highway, but will almost stop at slow idle. Am running MMO oil in the gasoline, how about some in the oil??

05-19-2012, 04:54 PM	#2
ford1 Senior Member Join Date: May 2010 Location: oroville ca. Posts: 1,554	Re: Sticking Valve? first thing is to run a compression check, you need to know which one is sticking, intake or exhaust, it may not even be a sticking valve, does the valve make a ticking noise? if its an intake mmo should help , if an exhaust i dont think it will be much help, you might try changing to one of the super slippery synthic oils

05-19-2012, 09:38 PM	#3
52merc Senior Member Join Date: May 2010 Location: new zealand Posts: 1,054	Re: Sticking Valve? how slow the idle?? it dont sound like valve speed the idle up a tad

05-20-2012, 09:27 PM	#4
FLA48 Senior Member Join Date: Jul 2011 Location: Conroe TX Posts: 170	Re: Sticking Valve? Did you use a vacuum meter to check if it is the valves and not something else? There was an animated post a week or so back that you could use to help pinpoint the problem.

05-21-2012, 05:16 AM	#5
Mac VP Senior Member Join Date: May 2010 Location: Cincinnati, OH Posts: 1,361	Re: Sticking Valve? This vacuum gauge chart will help on that test: http://www.vanpeltsales.com/FH_web/F...auge-chart.jpg __________________ VANPELT SALES LLC Cincinnati, Ohio Office: 513-724-9486 www.vanpeltsales.com www.classictransmission.com

05-21-2012, 10:36 AM	#6
paleot Senior Member Join Date: Jan 2012 Location: s/w Louisiana Posts: 119	Re: Sticking Valve? Sponsored Links (Register now to hide all advertisements) I had one sticking on my 8BA, just overhauled but not on the road yet! valve would stick after sitting for a month or so. I added 4 ounces of pro tec and have had no further problems. By the way the dealer told me I would have to drain it out to get the rings to seat properly. Tony