94 GMC 350 TBI won't start

Asked by Nov 15, 2016 at 02:25 PM about the 1994 GMC Suburban C1500

Question type: Maintenance & Repair

I changed the intake gaskets put it back
together and now it won't start I try to turn
it over and it keeps popping out the

6 Answers


Do you mean you are getting a backfire out of the carb, if so sounds like your timing if off for some reason, did you touch anything else while working on the car ?

No I didn't touch anything else and yes it's back firing


Check the timing and make sure all the spark plug wires go to the correct cylinders.

I did that and rechecked I'm lost


Check for vacuum leaks but I think you missed something on the timing. Did you get it 180 degrees off? Try static timing - put the #1 cylinder on TDC compression stroke and then set the distributor so that the rotor points to the #1 spark plug wire. This should get you close enough for the engine to start.

Ok I'm going to redo it again

Your Answer


Looking for a Used Suburban in your area?

CarGurus has 140 nationwide Suburban listings starting at $3,860.


GMC Suburban Experts

  • #1
  • #2
    Larry Thibert
  • #3
View All

Related Models For Sale

Used Chevrolet Suburban
351 Great Deals out of 21,836 listings starting at $1,999
Used GMC Yukon
400 Great Deals out of 21,416 listings starting at $1,495
Used Chevrolet Tahoe
677 Great Deals out of 39,506 listings starting at $1,000
Used GMC Sierra 1500
873 Great Deals out of 65,123 listings starting at $2,495
Used Ford F-150
2,299 Great Deals out of 183,538 listings starting at $699

Used Cars For Sale

1996 GMC Suburban C1500 For Sale
4 listings starting at $3,995
1994 GMC Suburban C1500 For Sale
3 listings starting at $4,493

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.