problems with Ford Ranger 1985 - Ford Ranger Forum

Rexeji · 08-13-2009, 02:18 PM

Hey everybody first time user,

My engine idles erratically and Lopes while idling. So I connected a vaccum pressure gauge last night and got the readings of 10 in then it dropped to 7 and started to shake like crazy (The needle on the gauge). This morning at about 10:00 I did this again. My engine idled high it would for about 2 minutes then started to drop again but this time when i hooked the guage up I got a steady 14 then drop steady 12 drop repeated till i turned the engine off about 5 mins of watching it go up and down. When I started to snap the throttle with my hand while looking at the guage i could only get it to 20.

I need to get my truck running as fast as i can please help me. how can I get my truck to idle better so I can take her too work. (Oh and she blows lots of blue exhaust smoke but i know the valve guides are worn but it used to idle a lot better before I changed the bottom oil seal.

Bill · 08-15-2009, 06:00 AM

1985, is this a carburator or CFI? Things common to both types, vacuum leaks, possible EGR valve not seating fully.

matcha · 08-21-2009, 06:48 AM

sounds like a vacuum leak to me ... and bein an 85 an vacuum hose can be bad if its original

08-13-2009, 02:18 PM	#1
Rexeji Junior Member Join Date: Aug 2009 Location: Kamloops Posts: 1	problems with Ford Ranger 1985 Hey everybody first time user, My engine idles erratically and Lopes while idling. So I connected a vaccum pressure gauge last night and got the readings of 10 in then it dropped to 7 and started to shake like crazy (The needle on the gauge). This morning at about 10:00 I did this again. My engine idled high it would for about 2 minutes then started to drop again but this time when i hooked the guage up I got a steady 14 then drop steady 12 drop repeated till i turned the engine off about 5 mins of watching it go up and down. When I started to snap the throttle with my hand while looking at the guage i could only get it to 20. I need to get my truck running as fast as i can please help me. how can I get my truck to idle better so I can take her too work. (Oh and she blows lots of blue exhaust smoke but i know the valve guides are worn but it used to idle a lot better before I changed the bottom oil seal.

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08-15-2009, 06:00 AM	#2
Bill Member Join Date: Feb 2009 Posts: 79	1985, is this a carburator or CFI? Things common to both types, vacuum leaks, possible EGR valve not seating fully.

08-21-2009, 06:48 AM	#3
matcha Junior Member Join Date: Aug 2009 Posts: 10	sounds like a vacuum leak to me ... and bein an 85 an vacuum hose can be bad if its original