cold start problems

akdriver · October 1, 2005

My son has a 1988 chevy pick-up with a 6.2 naturally aspirated moter it has 90000 miles. the paper work he got with the truck shows that GM replaced the engine under warranty when the truck was 2 years old so the engine has somewhat less milage.

lately it has has been difficult to start when cold, sitting over night or for a few hours. We have replaced the glow plugs fule filter and fule pump. I have not checked the voltage to the glow plugs with a meater but have checked all 8 with an idiot light.

the engine will start and run rough then die and wile take a couple of restarts to run. during the restarts it has a rough idle. There is no excessive smoke from the tale pipe I have also drained the water seperator.

The obivious should I recheck (with a meter) the voltage to the glow plugs. Could the glow plug controler be bad or do you have any other suggestions.

GM-Tech · October 10, 2005

Sorry, I barely remember the 6.2 and never worked on one myself. I have absolutely no knowledge I can share with you on that one. I don't even have a service manual that old.

akdriver · October 10, 2005

My son has a 1988 chevy pick-up with a 6.2 naturally aspirated moter it has 90000 miles. the paper work he got with the truck shows that GM replaced the engine under warranty when the truck was 2 years old so the engine has somewhat less milage.
lately it has has been difficult to start when cold, sitting over night or for a few hours. We have replaced the glow plugs fule filter and fule pump. I have not checked the voltage to the glow plugs with a meater but have checked all 8 with an idiot light.

the engine will start and run rough then die and wile take a couple of restarts to run. during the restarts it has a rough idle. There is no excessive smoke from the tale pipe I have also drained the water seperator.

The obivious should I recheck (with a meter) the voltage to the glow plugs. Could the glow plug controler be bad or do you have any other suggestions.

<{POST_SNAPBACK}>

Ok I checked with a meter and had 10 volts at the relay/controler and 10 volts at the glow plugs and 13 volts at the battery replaced the relay/controler without any change in the cold starting.

Any suggestions