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My 97 F-350 4x4 dump truck runs a little and "loads" up when…

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My 97 F-350 4x4...

My 97 F-350 4x4 dump truck runs a little rich and "loads" up when idling for a while. It starts when cold and warms up OK, but after a while at normal temps, it starts loading up and I get black exhaust smoke and a rough runner. Lately, when I put the headlight switch on full, the engine quits. It does run in parking light only mode. Suspect cam pos sensor is bad. Local mechanic thinks so. I have a new sensor and will replace soon. Meantime, no night travel.

Mechanic's Assistant: Have you checked the fuses? Have you checked the bulbs?

Not the bulbs and only in dash fuses. Check OK. Haven't checked the under hood relay and fuse box yet.

Mechanic's Assistant: Are you fixing your F350 yourself? What have you tried so far?

I fix all of my vehicles - three trucks and six cars. (3 are Fords) Sometimes I have a local mechanic work on them, but mostly do all my own work. Have over 50 years mechanical experience under the shade tree.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No, except the truck is a '97 with 33,000 miles on it. Not used much.

Submitted: 5 months ago.Category: Ford
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Answered in 1 hour by:
12/20/2017
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 5 months ago
HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 6,389
Experience: 28 years Auto experience, Ford ,GM, Chrysler, Asian & European
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Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

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Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 5 months ago

Hello, what engine is in this truck? Gas or diesel? Any warning lights on or diagnostic trouble codes stored?

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