gt350pilot
New CEG'er
- Joined
- Oct 11, 2013
- Messages
- 26
Another intermittent starting issue here. NO CEL or codes. FYI, although it is a 1998 the engine wiring harness has been replaced with a 2000 refurbished harness, so hopefully I am good there.
Pulled the UIM off this weekend to replace a leaking rear valve cover gasket. While there replaced the PCV and found that the rod between the "secondary" throttle butterflies was no longer connected. Got that jury rigged to work (by the way, does anybody know of a source for the correct plastic clips that holds the rod onto the bellcranks for the LIM?)
Anyway, wrapped all of that up and went to start it up and it cranked like crazy but no start, not even a burble. Tried a few more times and then decided to pull a plug and checked for spark. Had good spark. Put the plug back in and had a think for a few minutes. Went back and tried again and it started, ran a bit funky and then cleaned up and ran well. Took for a drive and ran great. Great performance. Concerned that I may have a fuel pump going bad but took a chance to drive to work this morning.
Started right up and ran fin until 1 mile from my house. It died and would not re-start. Towed it home. Grabbed a fuel pressure tester expecting to see a dead fuel pump but the results have me questioning that diagnosis. Seemed when I first energized the fuel pump it only had 10psi, but purged the tester and for about 6 additional times it read 52-54 psi after releasing the pressure each time
I still think I may have a failing fuel pump but wanted to see if anybody else has thoughts to the contrary or suggestions of things to check.
Thanks everybody in advance.
Pulled the UIM off this weekend to replace a leaking rear valve cover gasket. While there replaced the PCV and found that the rod between the "secondary" throttle butterflies was no longer connected. Got that jury rigged to work (by the way, does anybody know of a source for the correct plastic clips that holds the rod onto the bellcranks for the LIM?)
Anyway, wrapped all of that up and went to start it up and it cranked like crazy but no start, not even a burble. Tried a few more times and then decided to pull a plug and checked for spark. Had good spark. Put the plug back in and had a think for a few minutes. Went back and tried again and it started, ran a bit funky and then cleaned up and ran well. Took for a drive and ran great. Great performance. Concerned that I may have a fuel pump going bad but took a chance to drive to work this morning.
Started right up and ran fin until 1 mile from my house. It died and would not re-start. Towed it home. Grabbed a fuel pressure tester expecting to see a dead fuel pump but the results have me questioning that diagnosis. Seemed when I first energized the fuel pump it only had 10psi, but purged the tester and for about 6 additional times it read 52-54 psi after releasing the pressure each time
I still think I may have a failing fuel pump but wanted to see if anybody else has thoughts to the contrary or suggestions of things to check.
Thanks everybody in advance.