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Old 07-21-2013, 04:09 PM
Warlock III Warlock III is offline
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This might be a long thread with a lot of suggestions so bear that in mind. It would be very helpful if you answered the questions as they are asked and keep on track.

1. Does the truck get up to operating temperature?

(i,e, how long until it doesn't want to run?)

Because if it does, I'd check the exhaust back-pressure. Feel it when you start it and as it warms up try to see if it decreases.

2. Does it have constant back-pressure?

3. Does it have a catalytic converter?
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