• Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

1994 Chevrolet Silverado C3500 6.5 Turbo Diesel

Dismounted

Dismounted

New Member
Messages
1
Reaction score
0
Location
Southport, FL
I just bought the truck, and it was running fine. It overheated from a stuck thermostat. I fixed that, but it will not start now. I pulled the trouble shooting tree from All Data, and completed every step up to the point of the truck being at operating temp. the lift pump is operational, and I have fuel at the filter. When I crank it, it shudders as if it wants to start, but does not. I have very little fuel pressure at the injectors. I have replaced the PMD module. Tomorrow, I will check the oil pressure sending unit, and the fuel cut off solenoid. Any insight would be greatly appreciated.
 

Attachments

  • IMG_0241.JPG
    IMG_0241.JPG
    117.9 KB · Views: 7
So it over heated, how hot? After you fixed it immediately did not start? What was your fix?
Engine is damaged or the fix has something to do with it.
 
In order to start the diesel needs heat. This is achieved by a minimum cranking of 100 RPM cold and 150 RPM hot. It's also aided by good glow plugs. Use a photo tach and make sure you have minimum cranking RPM. Check glow plugs. Clean grounds. Test batteries. Failed starters can loose 1 brush and crank, but, too slow to start.

You have fuel at the injectors - IMO you are good there.

Overheating can ruin glow plugs and ruin rings. You can literally tie the overheated IDI rings in a knot as they loose tension and compression from getting too hot. The compression and leak down test will let you see if you cracked heads or blew the head gaskets also a common failure with overheating. No compression = no heat.
 
You must log in or register to reply here.
Back
Top