WILL NOT START WHEN HOT

[Willie E. Berry]

MY 87 GN WILL NOT START WHEN IT IS HOT. STARTS AND RUNS FINE WHEN COLD. WHEN HOT I HAVE SPARK BUT NO FUEL. WHEN I SPRAY STARTER FLUID IN INTAKE IT WILL START AND RUN GOOD.

 

[bpman1234]

When it happens do get power to the pump ?

 

[Willie E. Berry]

THANKS FOR THE COME BACK. YES I HAVE GOOD FUEL PRESSURE AT THE FUEL RAIL. THE NOID LIGHT IS NOT FLASHING. SO SOME HOW THE INJECTORS ARE NOT GETTING A SIGNEL TO PULSE. BUT AFTER I SPRAY IT WITH STARTING FLUID IT STARTS AND RUNS.

 

[~JM~]

" BUT AFTER I SPRAY IT WITH STARTING FLUID IT STARTS AND RUNS. "

Does the engine continue to run as it normally would, or just runs as long as the starting fluid burns?

 

[Willie E. Berry]

THE ENGINE CONTINUES TO RUNS AS NORMAL..

 

[bpman1234]

MY 87 GN WILL NOT START WHEN IT IS HOT. STARTS AND RUNS FINE WHEN COLD. WHEN HOT I HAVE SPARK BUT NO FUEL. WHEN I SPRAY STARTER FLUID IN INTAKE IT WILL START AND RUN GOOD.

when you spray the fluid do you let it cool off or while its hot .you have to diagnose when its hot check for spark- pulse-fp when these parts like coil module crank sensor start to go bad sometimes when they get hot they dont work but when cold they do . vortexbuicks-etc.com/ .go to this site trouble shooting no start.very helpful.

 

[Willie E. Berry]

WHEN I CHECK FOR NO START IT IS AFTER I SHUT OFF THE ENGINE WHILE IT IS HOT. IT WILL NOT START. I DO NOT WAIT TILL IT COOLS OFF TO CHECK. ALL CHECKS ARE DONE WHILE IT IS HOT, IF YOU WAIT TILL IT COOLS OFF IT TARTS NORMALLEY. IT IS ONLY WHEN HOT THAT THE PROBLEM IS THERE. IT JUST SEEMS THAT SOMETHING IS NOT FIRING THE INJECTORS DURING HOT START.