Bogs at wot

[phule]

Pulled the throttle body today. Cleaner than I thought it would be. Found some buildup in the Pcv port no major restriction. However I did find that the gasket on the bottom of the Tb was damaged the channel were the Iac is located weasel deformed and torn so there may have been a vacuum. Leak there if I recall my map sensor was only reading 8.8hg I know on my other car it idles at about 20 hg. So tomorrow I reinstall and Tuesday I get a new Tv cable end.

 

[454ss]

I would for sure do the fuel filter. does the exhaust sound normal, I mean if the cats blocked up they sound more muffled when you rev it up. maybe tps?

 

[phule]

Truck is catless and tps is within spec and cycles smooth.if nothing changes after Tb install I'm pulling the filter

 

[phule]

Pulled the distributor cap.looks like the rotor has been hitting the cap.I found shavings and plastic everywhere. Come to think about the last cap and rotor I saw the same thing. No moisture or corrosion though so that's good

 

[454ss]

can you move the rotor side to side? sounds like the shaft bushings are shot.

 

[phule]

Nope no side to side. That's what I thought intially

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[phule]

All that powder is from the cap and rotor

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[phule]

Could a vacuum leak cause a bog at wot? I did find the throttle body gasket was deformed/melted in the iac channel. Could have been leaking throuth the base gasket. Also my map sensor was reading 8.8 Hg should it be more towards 19hg I know my other car should be there. Im assuming all cars should have the same amount of vacuum

 

[phule]

Well wish me luck gentlemen after dinner and putting the little man to bed I will be test driving. I startedit up and it seems to idle better but that could just be me.

 

[jdyates]

Sorry to jack the thread, but is the rotor under the cap supposed to be unmoveable? Mine moves from side to side a little, and ive been chasing a misfire since last year.