Drove to look at a truck I'm considering buying. Guy told me it has a cyl 3 mis and thinks its an injector. He has an extra one. Take that with a grain of salt. Temp on cyl 3 is lower.
Is there anything I can do to make sure its not anything major? Injector or doing an overhead adj is cool id really not rather deal with a dropped valve or bad cylinder or something.
It starts right up, doesnt smoke. He says no oil water or diesel mixing. I suppose id have to sit and let it run for quite a while to see evidence.
Scanner I can buy, taking the intake manifold off, maybe a scope? What can I do?
Detroit 60 12.7 cyl3 misfire
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Bias_racing, Apr 11, 2021.
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I would want a pressure test on the coolant system. Get a loaner from Auto zone. Pump it up to about 15-20 lbs. check if it holds pressure. Then set it at about 5 lbs. start Truck, see if pressure builds. If there’s a problem like bad head gasket, possible dropped liner, you’ll know right away. Injectors are about $2000 for a six pack. Not hard to do. Labor maybe $1000? I’m not sure. New harness and valve cover gasket, maybe another $300. Good Luck with the deal.
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Any mechanics in the mo area?Rideandrepair Thanks this. -
Sketchy deal in my opinion. If you were looking to sell a truck would you have it running right and look for top dollar?
I would plan on in frame if I bought it and build that into the purchase price.Rideandrepair and spsauerland Thank this. -
Rideandrepair Thanks this.
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Im thinking about it...he said it has sat, (sold his other truck, works on a farm now) he had to clean the tanks to get it running but only got one cleaned good...; I peeked into the other tank and I was thinking varnish but I just ran across some pics and it actually kinda looks like algae /varnish. Any chance that could be it?
Rideandrepair Thanks this. -
Rideandrepair Thanks this.
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It could be a bad rocker roller or a bad cam lobe. I’d pass, no way to tell for sure till You open it up.
I had a roller on rocker arm break and beat up cam. Computer said injector was miss firing, but it was because of broken roller.Rideandrepair Thanks this. -
Rideandrepair Thanks this.
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You can see the valve train with the cover off.
Rideandrepair Thanks this.
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