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Old 11-25-2017, 10:56 AM   #1
Already Gone
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Hard Starting Problem.

After 2 years I finally got this 1992 Burb 4 x4 with the TBI 5.7 engine from an estate. The Burb sat for 3/4 years before I bought it. It runs and drives great but have one annoying issue. I've had a few GMT400's with the 5.7 TBI engine and they start within 5 seconds of turning the key. This Burb wont start on the first try after cranking for 15 or so seconds. On the second crank it fires up after 5 seconds. I've changed the plugs, fuel filter and it has tank of fresh gas, has no codes and runs smooth as silk once it starts. Oh yea it only has 156,000kms ( 96000 miles ) on it and has never pued anything as there is no hitch. Anyone got an idea what hard starting probem could be as its super annoying.
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1972 C10 Custom/Deluxe 613 Highlander 350/TH350
1999 White Tahoe LS 4x2 with Z56 Police Package

Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601

Ethics is knowing the difference between what you have right to do and what is right to do !!.... Potter Stewart

"So often times it happens that we live our life in chains and we never even know we have the key"
From the Eagles Song Already Gone - 1974

RIP Glenn Frey 1948-2016

Last edited by Already Gone; 11-25-2017 at 11:57 AM.
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Old 11-25-2017, 11:30 AM   #2
Sixball
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Re: Hard Starting Problem.

Quote:
Originally Posted by Already Gone View Post
After 2 years I finally got this 1992 Burb 4 x4 with the TBI 5.7 engine from an estate. The Burb sat for 3/4 years before I bought it. It runs and drives great but have one annoying issue. I've had a few GMT400's with the 5.7 TBI engine and they start within 5 seconds of turning the key. This Burb wont start on the first try after cranking for 15 or so seconds. On the second crank it fires up after 5 seconds. I've changed the plugs, fuel filter and it has tank of fresh gas and runs smooth as silk once it starts. Oh yea it only has 156,000kms ( 96000 miles ) on it and has never pued anything as there is no hitch. Anyone got an idea what hard starting probem could be as its super annoying.

Check out my thread below "intermittent hard starting / rough idle". I recieved some good advice in that thread. I replaced the Coolant Temp Sensor and only had 2 hard starts since (but I had some weird wiring too). $12 and about 10 minutes to replace that sensor. Hopefully that's all it will take for yours too
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Old 11-25-2017, 11:58 AM   #3
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Re: Hard Starting Problem.

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Originally Posted by Sixball View Post
Check out my thread below "intermittent hard starting / rough idle". I recieved some good advice in that thread. I replaced the Coolant Temp Sensor and only had 2 hard starts since (but I had some weird wiring too). $12 and about 10 minutes to replace that sensor. Hopefully that's all it will take for yours too
Thanks, I'll look into the sensors.
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1972 C10 Custom/Deluxe 613 Highlander 350/TH350
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Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601

Ethics is knowing the difference between what you have right to do and what is right to do !!.... Potter Stewart

"So often times it happens that we live our life in chains and we never even know we have the key"
From the Eagles Song Already Gone - 1974

RIP Glenn Frey 1948-2016
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Old 11-26-2017, 07:34 PM   #4
Kudzupatch
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Re: Hard Starting Problem.

This is not going to help but I noticed you location. I live in Alabama so temps in the 20's are not very common. My 93 Suburban always starts perfectly. Never failed to fire right up.

We drove to Michigan a couple of years ago to do a show. Parked it in parking garage of the condo we rented left it overnight. Next morning temps were in the low teens, I think around 12 degrees. It did the same exact thing you described. It turned over and over and never even sputtered. Scared me because it always fired right up. Second time it fired right off and ran perfect.

No problems after that but it warmed up a lot after that and never had another problem. Makes me wonder if temp has something to do with it?
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Old 11-26-2017, 08:27 PM   #5
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Re: Hard Starting Problem.

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Originally Posted by Kudzupatch View Post
This is not going to help but I noticed you location. I live in Alabama so temps in the 20's are not very common. My 93 Suburban always starts perfectly. Never failed to fire right up.

We drove to Michigan a couple of years ago to do a show. Parked it in parking garage of the condo we rented left it overnight. Next morning temps were in the low teens, I think around 12 degrees. It did the same exact thing you described. It turned over and over and never even sputtered. Scared me because it always fired right up. Second time it fired right off and ran perfect.

No problems after that but it warmed up a lot after that and never had another problem. Makes me wonder if temp has something to do with it?
Thanks for the reply. The cold may have something to do with the way this Burb is acting but I drove a 1994 Burb with the same TBI etc. for 6 yearscand evn when the temp was in the minus 20's F it'd start after4/5 seconds. Right now I have another Burb a 1993 agin TBI etc and it starts right away in the cold. I gotta feeling that coolant sensor thing or Idle Air Control is probably the culprit.
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1972 C10 Custom/Deluxe 613 Highlander 350/TH350
1999 White Tahoe LS 4x2 with Z56 Police Package

Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601

Ethics is knowing the difference between what you have right to do and what is right to do !!.... Potter Stewart

"So often times it happens that we live our life in chains and we never even know we have the key"
From the Eagles Song Already Gone - 1974

RIP Glenn Frey 1948-2016
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Old 11-27-2017, 12:31 PM   #6
abig84
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Re: Hard Starting Problem.

checking the actual fuel pressure might be a good idea? but i dont know if these older chevys have ports for the fuel pressure.

one thing i used to see on s10s and astrovans is the hose going up from the fuel pump to the pressure hose inside the tank will split. so you lose a lot of pressure while its trying to start but once it gets going and the pump is running full time the vehicle will drive fine.

easy way is if you can get a fuel gauge on the pressure line, key it on and once the fuel pump stops if the pressure drops down to zero really quickly thats probably the problem. a good working fuel pump should hold pressure or go down realllllllllly slowly
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Old 12-02-2017, 11:05 PM   #7
no2tracks
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Re: Hard Starting Problem.

Does it have the original distributor? Mine went bad. It was a hard starting problem that acted like the starter was bad. Maybe you can swap out for a known good one to test.
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Old 12-03-2017, 01:07 PM   #8
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Re: Hard Starting Problem.

Quote:
Originally Posted by abig84 View Post
checking the actual fuel pressure might be a good idea? but i dont know if these older chevys have ports for the fuel pressure.

one thing i used to see on s10s and astrovans is the hose going up from the fuel pump to the pressure hose inside the tank will split. so you lose a lot of pressure while its trying to start but once it gets going and the pump is running full time the vehicle will drive fine.

easy way is if you can get a fuel gauge on the pressure line, key it on and once the fuel pump stops if the pressure drops down to zero really quickly thats probably the problem. a good working fuel pump should hold pressure or go down realllllllllly slowly
Thanks for all the replies everyone. Seeing the Burb is 25 almost 26 years old I am going to get the fuel pump replaced and see where there that takes me. If that doesn't cure it then dist cap rotor , coil or maybe just a whole new distributor. If that doesn't cure it then the coolant sensor then the air idle control thing. It should work by then as everything will be changed. I really am thinking fuel pump as there are no codes on the Burb. I plan on keeping this one for a long time.
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1972 C10 Custom/Deluxe 613 Highlander 350/TH350
1999 White Tahoe LS 4x2 with Z56 Police Package

Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601

Ethics is knowing the difference between what you have right to do and what is right to do !!.... Potter Stewart

"So often times it happens that we live our life in chains and we never even know we have the key"
From the Eagles Song Already Gone - 1974

RIP Glenn Frey 1948-2016
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