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Diesel Questions/Problems in General (non specific makes)

166 messages,  Last post on Aug 23, 2011 at 8:31 AM

You are in the Maintenance & Repair Forum.

What is this discussion about? Engine, Exhaust, Diesel, Hatchback, Truck, Sedan, Wagon

This topic is for diesel car and truck owners who have not been able to find satisfactory information in the forums dealing with their particular vehicles (please use SEARCH on left of page before you post here).

Messages Page 17 of 17

#160 of 166 Re: Motor rums good but smokes bad [iceman9272005] by rblack98

Oct 21, 2010 (7:15 pm)

Replying to: iceman9272005 (Oct 15, 2010 12:02 am)
Need a bit more info. How many hrs. on unit? Put your thumb on breather tube, should not feel over 8 - 15 psi air hose. Valves adjusted lately? Check exhaust port manifold temp with infrared temp gun...20*F +/- max with each other. Use temp gun at coolant outlet neck...195*F-230*F operating temperature. White smoke probably is from non-combusted fuel-if engine temp is ranging 130*F - 150*F operating temp this condition can occur. If low temp,check t-stat(opening to soon).

#161 of 166 80 Silverado Diesel Coolant Loss by tilford

Aug 13, 2011 (7:30 am)

Truck is building pressure in radiator and pushing coolant into overflow jug, then out of jug on ground. I replaced thermostat and radiator cap, still have same problem. The factory temp guage has never showed hot. Any suggestions ???????????????

#162 of 166 Re: 80 Silverado Diesel Coolant Loss [tilford] by Mr_Shiftright HOST

Aug 13, 2011 (8:14 am)

Replying to: tilford (Aug 13, 2011 7:30 am)
Gauge could be wrong. You might want to get a radiator thermometer to double-check. One thing that drives people nuts with diagnosing overheating issues is making assumptions, such as relying on the gauge, or thinking that because a part came new out of the box, then it must be good.
 
If in fact you aren't overheating, then you might have a clogged radiator. Have you ever put a stop-leak product in it? That'll do it.

#163 of 166 change from diesel motor to gas burner by 31hog

Aug 14, 2011 (4:04 pm)

I have chevy 2500hd with a duramax that is giving me problems. estimates to repair are 7500-9000, wondering if I can change it out and put a gas crate motor in it for less. all thoughts are welcomed

#164 of 166 Re: 80 Silverado Diesel Coolant Loss [Mr_Shiftright] by tilford

Aug 23, 2011 (6:13 am)

Replying to: Mr_Shiftright (Aug 13, 2011 8:14 am)
Appreciate the advice, but since then it has began smoking white smoke out of the right exhaust tailpipe. I drive a big truck for a living and when they do this, it usually a blown head gasket. Of course it still has pressure in the radiator. I'm 99% sure it has not been hot. I checked the water temperature with a laser, and it shows around 190 degrees. What do you think about the head gasket "assumption" ?

#165 of 166 Re: 80 Silverado Diesel Coolant Loss [tilford] by Mr_Shiftright HOST

Aug 23, 2011 (8:31 am)

Replying to: tilford (Aug 23, 2011 6:13 am)
You can buy a test kit to test for combustion gases in the coolant.

Messages Page 17 of 17

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