Suggestions, comments, insults?
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Junior User
Joined: Mar 2014
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Suggestions, comments, insults?
89 F150 6cy with 5spd stick.
It has a stuttering problem in 2nd and 3rd gear.
I've changed the plugs, wires, cap, rotor, fuel and air filters.
Checked and cleaned ground for the fuel pump.
Any ideals on what to check next?
Also, if you known any good insults I'd like to hear them too.
It has a stuttering problem in 2nd and 3rd gear.
I've changed the plugs, wires, cap, rotor, fuel and air filters.
Checked and cleaned ground for the fuel pump.
Any ideals on what to check next?
Also, if you known any good insults I'd like to hear them too.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
What you describe sounds like a lean stumble which can be confirmed by inspecting the color of the spark plugs, pale tan to white is lean. If that is the case there could be a number of things causing it but start with making sure there are no leaks in the exhaust system upstream of the O2 sensor and no air leaks in any of the smog or EGR parts, and pull the codes and check fuel pressure to get an idea if the EFI or fuel systems are causing it.
Fleet Mechanic
Joined: Mar 2014
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From: Saskatchewan Canada
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Junior User
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Is starter fluid a good way to check for vac leaks?
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Okey dokey,
insulting insults - put downs and criticism
insulting insults - put downs and criticism
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Glad to see it looks like you may have resolved the problem. This is a classic example of why the "spray method" to find vacuum leaks will fail. Spraying around the top of the engine with ether/carb. cleaner/etc. would not have revealed the leaking VRES you found.
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