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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 09-04-2016
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Exhaust leak?

After a year and a half project of removing my intake manifolds and replacing the gaskets and putting back together, I finally finished. It came time to start up the truck. I removed as much of the old fuel as possible and added about three gallons of fresh fuel with a heavy helping of sea foam to help clean and condition what was in there as well as the system. Truck started up and ran rough for a while which I expected based on other peoples experiences. After it was warming up a bit I noticed exhaust smoke coming from the union between the exhaust manifold and the exhaust pipe on the drivers side. Just above the first oxygen sensor. It started getting dark so I cleaned up for the night and started researching. Sounds like there is no gasket in there. Any ideas? I thought I would try to see if the bolts would tighten a little or remove them to clean up he mating surfaces and try again.
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Old 09-04-2016
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I assume this is a Ranger and has a 4.0l engine, year would tell us what exhaust system you might have.
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Old 09-05-2016
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Sorry about that. Yes. It's a 98 ranger 4.0 extended cab with 250,000 miles. Stock exhaust.
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Old 09-05-2016
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They can use these types of gaskets between exhaust manif0ld and exhaust pipe: Exhaust Repair Hardware Stud Nut Spring Bolt Donut Gasket Replacement KIT FX438 | eBay

The engine can move in the motor mounts slightly so the springs hold pipe tight against manifold
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