Takes A While To Start When Cold !

golfballs · April 5, 2008

I have a GMC g2500 5.7. In the morning it may take 5 to 30 seconds to start. After its warm it will start instantly but when i turn the motor off for about 1 hour or more it will be back to not starting for a while. Does anyone have any ideas what the issue can be ?

Thank you.

xtrempickup · April 6, 2008

I have a GMC g2500 5.7. In the morning it may take 5 to 30 seconds to start. After its warm it will start instantly but when i turn the motor off for about 1 hour or more it will be back to not starting for a while. Does anyone have any ideas what the issue can be ?

Thank you.

could be fuel or timing related, i would say timing first that comes to mind

pennzoil29 · April 6, 2008

you didn't mention what year or how many miles are on it. is the ses light on? like mentioned before it could be fuel pressure or a possible timing issue.

golfballs · April 6, 2008

you didn't mention what year or how many miles are on it. is the ses light on? like mentioned before it could be fuel pressure or a possible timing issue.

Sorry, i forgot to mention it is a 2000 and it has 105k. Also i noticed that the ses light is on and the code is p1351.

golfballs · April 6, 2008

you didn't mention what year or how many miles are on it. is the ses light on? like mentioned before it could be fuel pressure or a possible timing issue.

Sorry, i forgot to mention it is a 2000 and it has 105k. Also i noticed that the ses light is on and the code is p1351.

Also the ignition mod was replace with the coil, plugs, cap and rotor 2 months ago, also the engine shakes alot.

golfballs · April 6, 2008

you didn't mention what year or how many miles are on it. is the ses light on? like mentioned before it could be fuel pressure or a possible timing issue.

Sorry, i forgot to mention it is a 2000 and it has 105k. Also i noticed that the ses light is on and the code is p1351.

Also the ignition mod was replace with the coil, plugs, cap and rotor 2 months ago, also the engine shakes alot.

I bought a scanner form autozone to pull the code and i was playing around with it and it said ignition adv 24 to 25, Is that the timing and is that correct ? If thats not correct can i loosen the dist and turn it untill the engine runs smooth ?

golfballs · April 6, 2008

I solved the issue with the p1351 code, i reinstalled the old mod and the code is gone. I still have the issue with the engine shake and the engie starting when it been sitting for 1 hour or more.