Question about 1985 Ford F150

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1985 ford F150 is running very rich. (choke is

1985 ford F150 300 six cylinder manual is running very rich. (choke in carb is working fine) It is actually destroying air filter. Sommetimes idles to fast, now idling to slow. Changed plugs and wires, pcv valve. Could it be idle control motor, egr valve. I don't think it has a throttle position sensor. Motor will not even rev up fully unless I take the air cleaner off.

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When you say it's destroying the air filter---do you mean it's all sooted up ?? I am assuming that what you mean.
Try disconnecting the vacuum line at the egr valve and see if that helps.
But it sounds more like a plugged up exhaust system.Try disconnecting or looosing the flange before the cataylic convertor and then see how it runs.

Posted on Nov 20, 2009

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