Tech Support Forum banner
Status
Not open for further replies.

Hard to start when hot 98 5.7 L Suburban

22K views 10 replies 5 participants last post by  imanager 
#1 ·
I have seen a lot of posts on a lot of sites that do not deal with this specific problem but are close. My 1998 GMC 5.7 L Vortec SFI motor starts fine when cold or it has been sitting over night but after I drive it for a while, until engine is hot, it starts as though the timing is far advanced. It hestitates during initial crank and continues for a little while and then it will catch and run fine. It acts like the timing that we used to super advance timing in our street hot rods with heavy cams and compression attributes. Help.

Earl, lost in Suburbia???????
 
#4 ·
Corday,

That sounds very plausible except for one thing. Dosen't vapor lock just preclude the starting and does not affect the advanced timing indicator symptom?

Midnight Tech,

That sounds very close to what may be happening. It is much easier to change the starter that the Fuel Pressure Sensor under the intake manifold. I think I may try that remedy first.

TTFN,

Earl
 
Status
Not open for further replies.
You have insufficient privileges to reply here.
Top