4.0 ohv studders at 2700-2800 rpms when accelerating.

[jjlacy]

I bought this truck alittle over a year ago. Ever since I bought it the engine studders when Im accelerating when the rpms get between 2700-2800. It studders in every gear when engine hits this range so I assume its not the tranny. No check engine light is on. It does eat spark plugs like crazy. I run autolight platinums usually haft to change around every 15000. Any info would be greatly appreciated. Thanks for your time.

 

[jjlacy]

I cant believe with all the knowledge on this page nobody has ever had this problem.

 

[SenorNoob]

I just now saw your post.

I'd guess it's running really rich or really lean in that range. What do the plugs look like when you have to change them?

 

[adsm08]

How are your fuel pressures?

 

[jjlacy]

Plugs look fine, I just start getting a miss when I start it. If I let it go one plug will quite firing all together. Dont know which one it is cause they all look fine. I just change all of them.

As far as fuel pressure I have no idea. Never checkd it.

Check engine light came on one time for 3-4 days. Code reader said it was cam positioning sensor. light went out before I changed it and never came back on.

 

[jjlacy]

Plugs look fine, I just start getting a miss when I start it. If I let it go one plug will quite firing all together. Dont know which one it is cause they all look fine. I just change all of them.

As far as fuel pressure I have no idea. Never checkd it.

Check engine light came on one time for 3-4 days. Code reader said it was cam positioning sensor. light went out before I changed it and never came back on.