no spark no fuel

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

2hoes

New Member
Joined
Oct 12, 2015
Messages
5
Reaction score
0
So bought a 95 Tahoe LT the other day needs a head gasket and that's fine and dandy simple enough but got it home put it in the shop and come to find out theres no spark replaced the coil and ICM thinking maybe it would be that but no luck. Turns over fine and dandy. Did some tests can't remember exactly what at this point. But long story short no spark and no fuel spraying out The injectors turn the key and can hear the fule pump kick on took off the file line and its getting fuel....took a test light hooked it the the POSITIVE terminal and touched the purple wire coming off the ICM and sounds like the injectors are clicking but now I'm at a loss if it was a pressure issue I would think id have spark so any input at this point would be appreciated THANKS
 

2hoes

New Member
Joined
Oct 12, 2015
Messages
5
Reaction score
0
Btw have the distributer with The plugs coming all out the top
 

lesterl

Full Access Member
Joined
Oct 10, 2011
Messages
2,597
Reaction score
1
Location
MO
You have a TBI engine. Check for power to the ICM and COIL, if the pickup coil in the distributor is bad it wont fire either, same as if the ICM is bad, pull the ICM and have it checked at the parts store. Pickup coil can be ohmed out.
 

2hoes

New Member
Joined
Oct 12, 2015
Messages
5
Reaction score
0
I replaced the coil, pick up coil, cap,rotor and the ICM and still have no spark or pulse.....pump still kicks on and I manually tried to get the check engine codes and all it flashes I a code 12 when it dose tho on the last flash I hear clicking up front
 

2hoes

New Member
Joined
Oct 12, 2015
Messages
5
Reaction score
0
Now I got spark and it will start with starter fluid but file injectors won't push fuel its getting fule all the way to injectors cleaned them out and still nothing fuel injectors pulse checked with light
 
Last edited:

lesterl

Full Access Member
Joined
Oct 10, 2011
Messages
2,597
Reaction score
1
Location
MO
Check your fuel pressure, takes a certain amount of pressure to open the injectors. May have a bad/ weak pump...
 
Top