C2500 Camper Special

[Triplesn8s]

Hi All,
Newbie here. About 5 years ago I rescued a 1989 Cheyenne C2500 5.7 Camper Special from oblivion. I have refurbished it with the usual parts over time but the motor is tired. Probably has 300k on it. i am a minor owner of a small machine shop and use it for customer deliveries cause this beast will haul a LOAD. I want to avoid rebuilding /replacing the motor as long as possible by unscrewing the POs previous ‘repairs’. TIA for any advice. Bill

 

[Drunkcanuk]

That's a mighty fine looking work truck!!!
Looks pretty dang straight and clean.

Oh....and welcome from Alberta Canada

 

[Triplesn8s]

Thank you Drunkcanuk. I like it. No a/c nor any other options. Just a TRUCK. Empty it rides like a cinder block lol

 

[Supercharged111]

What makes you think the engine is tired?

 

[Triplesn8s]

The odometer broke 10 to 20 years ago at 161K. It’s all original. Have to add a quart of oil for every hour of highway Drive. But it starts every time and runs regardless of outside temperature. It was burning a ton of oil but I replaced the valve seals and that clean things up a bit but it still burns a quart an hour. One cylinder Oil fouls a plug with some regularity, especially in warmer weather.

 

[fancyTBI]

The odometer broke 10 to 20 years ago at 161K. It’s all original. Have to add a quart of oil for every hour of highway Drive. But it starts every time and runs regardless of outside temperature. It was burning a ton of oil but I replaced the valve seals and that clean things up a bit but it still burns a quart an hour. One cylinder Oil fouls a plug with some regularity, especially in warmer weather.

Sounds like intake gaskets to me.

 

[Triplesn8s]

Could be I suppose. But it’s dumping so much fuel it might be washing the cylinder walls clean anyway. Need to cure the Rich running problem first I think. I posted a thread to the motor sub for him looking for help in tracking down what I believe is a missing O2 sensor.

 

[Triplesn8s]

Looks like you have one of similar vintage. Does it have an O2 sensor? Can you send me a photo of where the O2 sensor lead connects to the harness?

 

[Supercharged111]

The odometer broke 10 to 20 years ago at 161K. It’s all original. Have to add a quart of oil for every hour of highway Drive. But it starts every time and runs regardless of outside temperature. It was burning a ton of oil but I replaced the valve seals and that clean things up a bit but it still burns a quart an hour. One cylinder Oil fouls a plug with some regularity, especially in warmer weather.

So it's a 2 stroke.

 

[Triplesn8s]

Diesel