Odd problem with a stock '87 K10 cutting out. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

trevor73402 · 06-20-2010, 11:06 PM

Hey all,
I've got a stock '87 TBI K10 with a rebuilt 350 and a 700r4. The truck has always ran perfect, never had a single problem with it until today. On my way to work this morning running 60-65 down the highway I felt the truck cut out, just for a second. I felt it jerk and cut out then it would pick right back up and run fine. It did this several times during my 6 mile trip to work. When I got to the stop light and took off again it cut out several times in a row before I could get up to speed. I made it to work, parked it. Got off at 5 came out and started it up. It started fine, reved up fine several times, kicked the A/C on and seemed like it might have sputtered a bit. Took off and headed home. The truck did the same thing as it did this morning. Going down the highway it would cut out and jerk for just a second and then keep right on going. When I got home, put the truck in park, it truck seemed to be idleing a lil rougher than normal, but not bad, just noticeable.
I know this could really be anything but yall maybe give me some ideas of what to start looking at and checking?? I'm not real familiar with the TBI system and I don't know what all is controled by the electrical system compared to the older '80's models. Any help would be appreciated.
Thanks,

grinch4om · 06-21-2010, 07:43 AM

water bottle sprayer, wet the plug wires down, listen for snap or do it at dusk to see plug wire breakdown. when did you replace fuel filter last? the fuel punp could also be on the way out...these are the things I would start with...

rfmaster · 06-21-2010, 10:57 AM

Quote:

Originally Posted by grinch4om

water bottle sprayer, wet the plug wires down, listen for snap or do it at dusk to see plug wire breakdown. when did you replace fuel filter last? the fuel punp could also be on the way out...these are the things I would start with...

Agree - Check fuel delivery as OE Fuel Pump might be going out.

81ratrodc10 · 06-21-2010, 12:40 PM

had close to the same prob on a old truck i had it was the fuel pump for me chack all tha and such

Walts_restoration · 06-21-2010, 12:41 PM

happened on my sisters 91 camaro 305 tbi , id check fuel pressure, it could be the pump (or maybe filter as well)

trevor73402 · 06-21-2010, 01:44 PM

Thanks for the help guys. I'll start with the filter and if that don't fix it I'll move on to the fuel pump. I'll also chec the spark plug wire, but they are fairly new so I don't think that's the problem.

Thanks!!!

Low87 · 06-21-2010, 02:21 PM

Sounds like what mine was doing, turned out to be water in the fuel. Good luck diagnosing.

trevor73402 · 06-22-2010, 01:30 AM

I changed out the fuel filter and added some Lucas fuel treatment and took it for a drive. I went about 20 miles and I never felt it cut out or miss. It does seem to still have a bit of a rough idle, but it might just be in my head. I'll drive it again tomorrow and see if it gives me any trouble. I hope that fixed it because I didn't know the fuel pump on this one was in the gas tank?? I never hear it priming up when I turn the key like most in-tank fuel pumps. I guess I thought it was still on the lower side of the motor in '87.

06-20-2010, 11:06 PM	#1
trevor73402 Registered User Join Date: Apr 2010 Location: Ardmore, OK Posts: 164	Odd problem with a stock '87 K10 cutting out. Hey all, I've got a stock '87 TBI K10 with a rebuilt 350 and a 700r4. The truck has always ran perfect, never had a single problem with it until today. On my way to work this morning running 60-65 down the highway I felt the truck cut out, just for a second. I felt it jerk and cut out then it would pick right back up and run fine. It did this several times during my 6 mile trip to work. When I got to the stop light and took off again it cut out several times in a row before I could get up to speed. I made it to work, parked it. Got off at 5 came out and started it up. It started fine, reved up fine several times, kicked the A/C on and seemed like it might have sputtered a bit. Took off and headed home. The truck did the same thing as it did this morning. Going down the highway it would cut out and jerk for just a second and then keep right on going. When I got home, put the truck in park, it truck seemed to be idleing a lil rougher than normal, but not bad, just noticeable. I know this could really be anything but yall maybe give me some ideas of what to start looking at and checking?? I'm not real familiar with the TBI system and I don't know what all is controled by the electrical system compared to the older '80's models. Any help would be appreciated. Thanks,

06-21-2010, 07:43 AM	#2
grinch4om dang its hot Join Date: Nov 2006 Location: frankfort kentucky Posts: 1,349	Re: Odd problem with a stock '87 K10 cutting out. water bottle sprayer, wet the plug wires down, listen for snap or do it at dusk to see plug wire breakdown. when did you replace fuel filter last? the fuel punp could also be on the way out...these are the things I would start with...

06-21-2010, 12:40 PM	#4
81ratrodc10 house of chevy's Join Date: May 2010 Location: New milford, CT Posts: 583	Re: Odd problem with a stock '87 K10 cutting out. had close to the same prob on a old truck i had it was the fuel pump for me chack all tha and such __________________ 1987 m1028 cucv d30 2001 chevy s10 2000 honda shadow sabre 1100 "it's going to be an interesting ride home"

06-21-2010, 12:41 PM	#5
Walts_restoration Real Projects never die Join Date: Jan 2007 Location: Lawrence, kansas Posts: 1,508	Re: Odd problem with a stock '87 K10 cutting out. happened on my sisters 91 camaro 305 tbi , id check fuel pressure, it could be the pump (or maybe filter as well) __________________ Ill put it this way, ive got a few lawn ornaments My name tag says Ryan KansasTwister On other forums Last edited by Walts_restoration; 06-21-2010 at 12:41 PM.

06-21-2010, 01:44 PM	#6
trevor73402 Registered User Join Date: Apr 2010 Location: Ardmore, OK Posts: 164	Re: Odd problem with a stock '87 K10 cutting out. Thanks for the help guys. I'll start with the filter and if that don't fix it I'll move on to the fuel pump. I'll also chec the spark plug wire, but they are fairly new so I don't think that's the problem. Thanks!!!

06-21-2010, 02:21 PM	#7
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	Re: Odd problem with a stock '87 K10 cutting out. Sounds like what mine was doing, turned out to be water in the fuel. Good luck diagnosing. __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin

06-22-2010, 01:30 AM	#8
trevor73402 Registered User Join Date: Apr 2010 Location: Ardmore, OK Posts: 164	Re: Odd problem with a stock '87 K10 cutting out. I changed out the fuel filter and added some Lucas fuel treatment and took it for a drive. I went about 20 miles and I never felt it cut out or miss. It does seem to still have a bit of a rough idle, but it might just be in my head. I'll drive it again tomorrow and see if it gives me any trouble. I hope that fixed it because I didn't know the fuel pump on this one was in the gas tank?? I never hear it priming up when I turn the key like most in-tank fuel pumps. I guess I thought it was still on the lower side of the motor in '87.



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