engine chatter when accelerating up hill mainly f-15 4.2 6 cyl

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01-14-2012, 12:33 PM

scutter50

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engine chatter when accelerating up hill mainly f-15 4.2 6 cyl

What would be causing my engine to chatter up hill -- i have replaced the fuel pump, strainer , fuel filter , put motorcraft plugs, wires in it ??

frank

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01-14-2012, 03:12 PM

Bluegrass 7

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Check for codes.
Coils, or an EGR system fault could cause it.

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01-14-2012, 03:24 PM

critterf1

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Combustion chamber carbon build-up could also be the culprit. Is the IMRC system working properly?

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01-22-2012, 01:41 PM

artfd

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Quote:

Originally Posted by critterf1

Combustion chamber carbon build-up could also be the culprit. Is the IMRC system working properly?

To illustrate - the linkage controlling the IMRC system is shown below. It is located on top of the engine, as far back as you can reach before hitting the firewall. The intake manifold plenum has been removed:
<iframe title ="Preview" scrolling="no" marginheight="0" marginwidth="0" frameborder="0" width="320px" height="240px" style="padding:0;background-color:#fcfcfc;" src="https://skydrive.live.com/embed?cid=E6418942DC619CB4&resid=E6418942DC619CB4% 213693&authkey=AL9Y-rO2Jgz_Fws"></iframe>

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