fires up then dies
12-04-2010, 05:49 AM
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fires up then dies
Hi, my truck wont stay running, it cranks and fires up right away then dies. I added gas line antifreeze, tightened the carb, but am stumped. Also it was blowing really black out the tailpipe before it died as the truck sat on a farm for who knows how long before i bought it, could it be the exhaust is plugged up. The engine is a 360ci and it has a new carb on it.
Thank you
Thank you
12-04-2010, 07:14 AM
#2
Does it die instantly as you release the key from the start position? If so, this is a classic symptom of a bad coil resistor. What happens is, the ign. switch supplies coil power in start, bypassing the resistor.
If it runs longer, could be a lot of things, including bad, stale gas.
I'd block the choke wide open by whatever means--wire, etc, until you eliminate the choke
Could be the gas in the carb (sitting) gummed up the carb, and it just needs to be cleaned out
Doubt it's the exhaust, but there has been cases of catalytic converters condensing water and then freezing, etc I'd check elsewhere first
One thing that PROBABLY is not causing the problem, but is something to check, make sure the spring loaded exhaust butterfly is not stuck. Will be a big "weight thingie" immediately above the junction of the exhaust pipe and the exhaust manifold. Should rotate back and forth easily.
If it runs longer, could be a lot of things, including bad, stale gas.
I'd block the choke wide open by whatever means--wire, etc, until you eliminate the choke
Could be the gas in the carb (sitting) gummed up the carb, and it just needs to be cleaned out
Doubt it's the exhaust, but there has been cases of catalytic converters condensing water and then freezing, etc I'd check elsewhere first
One thing that PROBABLY is not causing the problem, but is something to check, make sure the spring loaded exhaust butterfly is not stuck. Will be a big "weight thingie" immediately above the junction of the exhaust pipe and the exhaust manifold. Should rotate back and forth easily.
12-04-2010, 04:13 PM
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Does it die instantly as you release the key from the start position? If so, this is a classic symptom of a bad coil resistor. What happens is, the ign. switch supplies coil power in start, bypassing the resistor.
If it runs longer, could be a lot of things, including bad, stale gas.
I'd block the choke wide open by whatever means--wire, etc, until you eliminate the choke
Could be the gas in the carb (sitting) gummed up the carb, and it just needs to be cleaned out
Doubt it's the exhaust, but there has been cases of catalytic converters condensing water and then freezing, etc I'd check elsewhere first
One thing that PROBABLY is not causing the problem, but is something to check, make sure the spring loaded exhaust butterfly is not stuck. Will be a big "weight thingie" immediately above the junction of the exhaust pipe and the exhaust manifold. Should rotate back and forth easily.
If it runs longer, could be a lot of things, including bad, stale gas.
I'd block the choke wide open by whatever means--wire, etc, until you eliminate the choke
Could be the gas in the carb (sitting) gummed up the carb, and it just needs to be cleaned out
Doubt it's the exhaust, but there has been cases of catalytic converters condensing water and then freezing, etc I'd check elsewhere first
One thing that PROBABLY is not causing the problem, but is something to check, make sure the spring loaded exhaust butterfly is not stuck. Will be a big "weight thingie" immediately above the junction of the exhaust pipe and the exhaust manifold. Should rotate back and forth easily.
12-04-2010, 08:32 PM
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