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95 mustang


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I would recommend starting with checking the basics first. Is cam timing good? Unplug the cam sensor. You said the cats weren't plugged, did you drop the pipes to verify? Install a back pressure gauge? Is the fuel fresh, or has it been sitting awhile? Does the fuel pressure drop under load? Will the spark jump a good half inch? Is the spark blue? What is the compression? Engine vacuum, at idle, and 2000 rpm?

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Yes, is the check engine light on? Have any codes been found? Have you pulled the plugs?

How many miles on the engine? I agree a chain jumping is very rare if ever!

Edit:

Quote:
manifolds get red hot

Just saw this. If the exhaust manifolds are glowing red, I would say chances are the cats are plugged like said.

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Are there any after market mods? injectors, power chip, K&N air filter, ect? Is the fuel fresh? If that all looks good, possible a bad pcm? If you have 150 compression on all cyl, I wouldn't think base timing is off. BUT, Ford pcm's are NOT common to go bad! Is the EGR stuck open?

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