Recent content by zepplinc20

Z
TBI 350 runs poorly under load/ backfires

Another thing to check would be manifold vacuum. If there was something going on with the valvetrain it would show up as an erratic vacuum reading at idle. Also, verify TDC matches the timing mark on the harmonic balancer, just in case it slipped. I just replaced one on a 350 the other day.
- zepplinc20
- Post #6
- Mar 23, 2016
- Forum: Engine Performance + Maintenance
Z
90 454 TBI runs like crap

Just wanted to post an update since I hate it when people don't follow up on threads. Fuel pressure was checked and looked good at 13.5 to 14 lbs. Timing chain slack was found to be at 8 to 10 degrees. Planning on replacing it soon. Compression check found 165 to 170 on cylinders 1 through 7...
- zepplinc20
- Post #3
- Mar 23, 2016
- Forum: Engine Performance + Maintenance
Z
90 454 TBI runs like crap

Hey guys I'm looking for a little direction on this one. I recently purchased a 90 k3500 with 99k miles. This thing runs like dog crap. It's extremely rich and has a slightly rough idle. I've gone through the typical tbi stuff like cts, map, egr...etc. TBI was rebuilt and pressure regulator...
- zepplinc20
- Thread
- Jul 31, 2015
- Replies: 4
- Forum: Engine Performance + Maintenance