Just got a 87 Sierra, have ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Damon23 · 02-09-2010, 09:32 AM

Hello all. I just picked up another 87 but this time it is a sierra. It is a nice truck, great body, all the bells and whistles but it has a problem. It has a bog in it. It is the factory fuel injection system. When it gets up to the upper rpms it runs smooth as silk but getting there seems like a hassle. Any ideas on what to look for? I was going to replace the plugs, wires, cap, and rotor then run some seafoam thru it to see it that clears it up. The truck has sat for a few years so maybe it just needs to be driven. Thanks in advance for you ideas.

**old Rusty C10** · 02-09-2010, 10:30 AM

if its sat id do exactly what youre thinking about and get some fuel injection cleaner and clean out the TBI. Id also change the fuel filter and go from there

cableguy0 · 02-09-2010, 10:43 AM

If it sat for a while. First do the tune up parts and fuel filter etc then unhook the battery and let it sit for an hour or so. actually the best thing to do is unhook the battery while your doing the tune up. get some foaming throttle body cleaner and spray down the throttle body let it sit while your working on the truck.swap the fuel filter and make sure you get some fresh fuel in it.

Keith Seymore · 02-09-2010, 02:11 PM

Quote:

Originally Posted by Damon23

Hello all. I just picked up another 87 but this time it is a sierra. It is a nice truck, great body, all the bells and whistles but it has a problem. It has a bog in it. It is the factory fuel injection system. When it gets up to the upper rpms it runs smooth as silk but getting there seems like a hassle. Any ideas on what to look for? I was going to replace the plugs, wires, cap, and rotor then run some seafoam thru it to see it that clears it up. The truck has sat for a few years so maybe it just needs to be driven. Thanks in advance for you ideas.

Quick question: what's "seafoam"?

I'm not familiar with that -

K

Damon23 · 02-09-2010, 04:26 PM

It is a product that some shops use to do fuel injector and intake cleaning services with. But for us regular guys, you would use it and run it thru a vacuum line to clean the upper intake. It works really well. You can also run it in your gas to clean the injecters.

Any particular brand on this foaming throttle body cleaner?

Hoods69BadBowTie · 02-09-2010, 05:56 PM

Can't think of the name of the stuff I use come ins red and white can. I was gonna say the same thing do a tune up. Fuel filter and clean everything out then drive it and clear it all out! Should get the trick done.

Damien · 02-09-2010, 06:10 PM

Quote:

Originally Posted by Keith Seymore

Quick question: what's "seafoam"?

I'm not familiar with that -

K

Here you go Keith. Their Bugs Be Gone works awsome. I used to get the sample bottles whe it first came out. They fit in the back pocket nicely then off to the car wash on the motorcycle. Spray it on, wait a few minutes, bugs almost fly back off.

As for the truck problem, Start with the tune up. check for vacuum leaks too. Lines, hoses and throttle body base gasket.

Mr.Chevy4x4 · 02-09-2010, 06:55 PM

Check engine light on? Check for codes. EGR problems can and will cause a low end bog. I fought with the for a while before I found out that the EGR solenoid was bad. $20 later and she ran like a champ.

Mike

Damon23 · 02-09-2010, 07:31 PM

no check engine light on. of course it could be unplugged.

02-09-2010, 09:32 AM	#1
Damon23 Registered User Join Date: Sep 2009 Location: D'ville Georgia Posts: 470	Just got a 87 Sierra, have ? Hello all. I just picked up another 87 but this time it is a sierra. It is a nice truck, great body, all the bells and whistles but it has a problem. It has a bog in it. It is the factory fuel injection system. When it gets up to the upper rpms it runs smooth as silk but getting there seems like a hassle. Any ideas on what to look for? I was going to replace the plugs, wires, cap, and rotor then run some seafoam thru it to see it that clears it up. The truck has sat for a few years so maybe it just needs to be driven. Thanks in advance for you ideas.

02-09-2010, 10:30 AM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,277	Re: Just got a 87 Sierra, have ? if its sat id do exactly what youre thinking about and get some fuel injection cleaner and clean out the TBI. Id also change the fuel filter and go from there __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

02-09-2010, 10:43 AM	#3
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	Re: Just got a 87 Sierra, have ? If it sat for a while. First do the tune up parts and fuel filter etc then unhook the battery and let it sit for an hour or so. actually the best thing to do is unhook the battery while your doing the tune up. get some foaming throttle body cleaner and spray down the throttle body let it sit while your working on the truck.swap the fuel filter and make sure you get some fresh fuel in it. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

02-09-2010, 04:26 PM	#5
Damon23 Registered User Join Date: Sep 2009 Location: D'ville Georgia Posts: 470	Re: Just got a 87 Sierra, have ? It is a product that some shops use to do fuel injector and intake cleaning services with. But for us regular guys, you would use it and run it thru a vacuum line to clean the upper intake. It works really well. You can also run it in your gas to clean the injecters. Any particular brand on this foaming throttle body cleaner?

02-09-2010, 05:56 PM	#6
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: Just got a 87 Sierra, have ? Can't think of the name of the stuff I use come ins red and white can. I was gonna say the same thing do a tune up. Fuel filter and clean everything out then drive it and clear it all out! Should get the trick done. __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

02-09-2010, 06:55 PM	#8
Mr.Chevy4x4 Registered User Join Date: Jul 2007 Location: Sims, NC Posts: 531	Re: Just got a 87 Sierra, have ? Check engine light on? Check for codes. EGR problems can and will cause a low end bog. I fought with the for a while before I found out that the EGR solenoid was bad. $20 later and she ran like a champ. Mike

02-09-2010, 07:31 PM	#9
Damon23 Registered User Join Date: Sep 2009 Location: D'ville Georgia Posts: 470	Re: Just got a 87 Sierra, have ? no check engine light on. of course it could be unplugged.



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