few problems with an old motor

[zach1990]

About a month ago my truck began spitting a little bit of smoke out of the tail pipe for a few seconds after cold starting it. The other problem is if I try to cold start and try to drive off immediately the truck just doesn't have any power to get rolling very well, but if I let it warm up to opperating temp it does just fine. Anyone have suggestions to remedy this besides getting a new motor? Id love to see 400k miles with my original motor. Trucks info is in sig and current mileage is 301k

[Zembonez]

I've seen a number of LS motors make 350K. They get pretty tired about the 300K mark though. You can buy a low mileage used one pretty cheap. That's what I'd do!

[zach1990]

I plan on that when this one finally goes but for the time being id like it to run as long as possible. Its a good motor when it warms up

[txab]

I'd look into the temp sending unit for the ECM. It may telling the ECM the engine is warmer and not letting it run in open loop when cold

[zach1990]

Where would I find it at on the truck? And is there a way to test it?

[zach1990]

Where would I find it at on the truck? And is there a way to test it?

 

bump

[KMGZ400]

check your water pump.. my 01 would shoot smoke out of the exhaust on cold starts and it was the water pump

[jaredlucky16]

intake gaskets causing a vacuum leak

[zach1990]

Thanks guys ill look into those tomorrow when I leave the station.

 

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[zach1990]

If old faulty valve seals are causing my smoking on cold starts would changing to a heavier oil help with the smoking untill I can get the cash for an engine swap if it comes to that? Right now I'm running 10w-30 castrol full synthetic with titanium so if heavier would work what is yalls recomendations

 

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