Hey guys,
I recently got a 96 gmc and im working through some problems to get it on the road. Im also in Australia so replacement parts are hard to get and slow to arrive so i need to make the best assessments i can.
Anyway truck is 5.7L manual, stock.
It is hard to start, requiring a lot of turning over to do so, it runs for about 10 seconds, you can almost time it, and then it stalls, meanwhile idle is rough, seems to hunt/miss a little. If i raise revs, keep it running and drive it it simply has no power, does a little missing but mainly feels like one big flat spot.
I had thought fuel initially, so checked the filter (bit restricted but no longer) - made no difference, i wondered about fuel pressure, i clamped the return line and it made no difference. I Can also sit and watch the fuel pouring into the motor, It runs, there is no change in fuel flow, then it dies suddenly, so i no longer think its a fueling issue.
The way it cuts out suddenly also does not seem like fuel, so now i am leaning towards the ignition module in the distributor or some other electrical problem
Just looking for some advice/experiences. These trucks are very uncommon in Australia and the fueling system especially (a carby with two injectors hung over it) is pretty foreign to me. I wondered if this might be a common issue
Pic of my truck added!
THanks
I recently got a 96 gmc and im working through some problems to get it on the road. Im also in Australia so replacement parts are hard to get and slow to arrive so i need to make the best assessments i can.
Anyway truck is 5.7L manual, stock.
It is hard to start, requiring a lot of turning over to do so, it runs for about 10 seconds, you can almost time it, and then it stalls, meanwhile idle is rough, seems to hunt/miss a little. If i raise revs, keep it running and drive it it simply has no power, does a little missing but mainly feels like one big flat spot.
I had thought fuel initially, so checked the filter (bit restricted but no longer) - made no difference, i wondered about fuel pressure, i clamped the return line and it made no difference. I Can also sit and watch the fuel pouring into the motor, It runs, there is no change in fuel flow, then it dies suddenly, so i no longer think its a fueling issue.
The way it cuts out suddenly also does not seem like fuel, so now i am leaning towards the ignition module in the distributor or some other electrical problem
Just looking for some advice/experiences. These trucks are very uncommon in Australia and the fueling system especially (a carby with two injectors hung over it) is pretty foreign to me. I wondered if this might be a common issue
Pic of my truck added!
THanks
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