help with chevy truck - Page 2

cad · 03-30-2011, 10:09 PM

When I worked in parts at Huber Chevrolet, we used to sell a lot of distributor shafts for those and the gasket under the throttle body. Not very many injectors.
Fuel pumps are extremely common, too. Sorry if I missed anything.

Clark

Daran Summerton · 03-30-2011, 10:29 PM

Can you feel any air coming out the tail pipe when it's running?

Jim Woods · 03-31-2011, 04:22 AM

did not try checking for air at tailpipe. Ed I was thinking of changing it to carb and hei, Dont know if thats a possibility or not.

danny waters sr · 03-31-2011, 08:02 AM

Jim ,I got a spare 283 you can put in it......

Jim Kaekel · 03-31-2011, 09:59 AM

Jim: If all else fails with the distributor, MSD offers a replacement unit for '87-95 Chevy trucks, pt. no. 8366. Hope to see you soon, Jim

jasondearduff · 03-31-2011, 03:50 PM

don't forget to get a new pickup coil when you pick up your distributor shaft. they tend to be brittle and coroded also. replace these 2 parts and you will be good to go.

Tod Lane · 03-31-2011, 06:33 PM

I too hyave a 95 Chevy truck with about 200,000 miles on it. Would this dist shaft problem cause low HP/Sluggish performance and lowered fuel mileage?

No missfire I can hear, you do have to pump it a couple times to start it.

Recent plugs wires and cap, maybe 15,000 miles

The truck burns no oil, compression is good in all eight Cyls. It almost feels like the Cat Con is plugged.

doug schriener · 03-31-2011, 06:50 PM

Quote:

Originally Posted by Tod Lane

I too hyave a 95 Chevy truck with about 200,000 miles on it. Would this dist shaft problem cause low HP/Sluggish performance and lowered fuel mileage?

No missfire I can hear, you do have to pump it a couple times to start it.

Recent plugs wires and cap, maybe 15,000 miles

The truck burns no oil, compression is good in all eight Cyls. It almost feels like the Cat Con is plugged.

Tod-Have you checked the timing per the advice on this thread? Be certain that you're getting your full ignition advance-we all know how doggy that can feel-if you have never replaced the shaft in the dist. I would just in the interest of good maintenance.The timing tag under the hood will give advice on checking timing also so you should have lotsa help there-good luck. Doug Schriener

buzzinhalfdozen · 04-02-2011, 08:50 PM

Sound like Tod Lane hit it, I'd look at The Catalytic convertor. Still sounds as if you have a base timing issue after that is resolved if it still has no power remove the frt, o2 sensor and adapt a pressur gage to the hole start engine should not see more than 1-3 psi at 1500 RPM

Lew Silverman · 04-02-2011, 09:22 PM

The engine still should run with the brown wire disconnected. The initial timing should be enough to at least let the motor idle. Whatever the label says to set the timing, say 4-degrees before TDC, with the brown wire disconnected, should set the MIL light and a code in the ECM, so you'll have to clear both after you're done with the timing.

Did you have any codes stored in the ECM after the motor started to exhibit the stumble? OBD ll vehicles are usually (but not always) easier to diagnose because of the codes they throw. It might pay to have someone hook a scanner to it, if you haven't done so already. I had a neighbor who's Firebird had a terrible stumble off idle, hooked the scanner up and found the ignition system wasn't advancing the timing at all! No hair pulling necessary!

Just a few ideas...............

Lew

03-30-2011, 10:09 PM	#11
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 700 Likes: 200 Liked 91 Times in 51 Posts	Re: help with chevy truck When I worked in parts at Huber Chevrolet, we used to sell a lot of distributor shafts for those and the gasket under the throttle body. Not very many injectors. Fuel pumps are extremely common, too. Sorry if I missed anything. Clark

03-30-2011, 10:29 PM	#12
Daran Summerton Senior Member Join Date: Jun 2003 Location: Las Vegas nv Posts: 600 Likes: 18 Liked 66 Times in 37 Posts	Re: help with chevy truck Can you feel any air coming out the tail pipe when it's running? __________________ 72 cutlass

03-31-2011, 04:22 AM	#13
Jim Woods Senior Member Join Date: Aug 2006 Location: celina, ohio Posts: 623 Likes: 4 Liked 12 Times in 7 Posts	Re: help with chevy truck did not try checking for air at tailpipe. Ed I was thinking of changing it to carb and hei, Dont know if thats a possibility or not. __________________ Jim Woods

03-31-2011, 08:02 AM	#14
danny waters sr VIP Member Join Date: Apr 2007 Location: lagrange,nc Posts: 2,224 Likes: 1 Liked 0 Times in 0 Posts	Re: help with chevy truck Jim ,I got a spare 283 you can put in it...... __________________ Danny Waters, Sr / 73 Duster "340"

03-31-2011, 09:59 AM	#15
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,226 Likes: 133 Liked 529 Times in 107 Posts	Re: help with chevy truck Jim: If all else fails with the distributor, MSD offers a replacement unit for '87-95 Chevy trucks, pt. no. 8366. Hope to see you soon, Jim __________________ Jim Kaekel 3836 STK

03-31-2011, 03:50 PM	#16
jasondearduff Junior Member Join Date: Jan 2010 Posts: 30 Likes: 0 Liked 0 Times in 0 Posts	Re: help with chevy truck don't forget to get a new pickup coil when you pick up your distributor shaft. they tend to be brittle and coroded also. replace these 2 parts and you will be good to go.

03-31-2011, 06:33 PM	#17
Tod Lane Member Join Date: Jul 2008 Posts: 152 Likes: 0 Liked 2 Times in 2 Posts	Re: help with chevy truck I too hyave a 95 Chevy truck with about 200,000 miles on it. Would this dist shaft problem cause low HP/Sluggish performance and lowered fuel mileage? No missfire I can hear, you do have to pump it a couple times to start it. Recent plugs wires and cap, maybe 15,000 miles The truck burns no oil, compression is good in all eight Cyls. It almost feels like the Cat Con is plugged. __________________ Tod Lane Swartz & Lane 66 Nova Swartz & Lane 79 H/CM Trans Am

04-02-2011, 08:50 PM	#19
buzzinhalfdozen Senior Member Join Date: Sep 2006 Location: Bellevue Ohio Posts: 984 Likes: 0 Liked 11 Times in 8 Posts	Re: help with chevy truck Sound like Tod Lane hit it, I'd look at The Catalytic convertor. Still sounds as if you have a base timing issue after that is resolved if it still has no power remove the frt, o2 sensor and adapt a pressur gage to the hole start engine should not see more than 1-3 psi at 1500 RPM __________________ Joe Buchanan SS/BX 3117

04-02-2011, 09:22 PM	#20
Lew Silverman VIP Member Join Date: Mar 2010 Location: Newport News, VA Posts: 1,435 Likes: 371 Liked 129 Times in 59 Posts	Re: help with chevy truck The engine still should run with the brown wire disconnected. The initial timing should be enough to at least let the motor idle. Whatever the label says to set the timing, say 4-degrees before TDC, with the brown wire disconnected, should set the MIL light and a code in the ECM, so you'll have to clear both after you're done with the timing. Did you have any codes stored in the ECM after the motor started to exhibit the stumble? OBD ll vehicles are usually (but not always) easier to diagnose because of the codes they throw. It might pay to have someone hook a scanner to it, if you haven't done so already. I had a neighbor who's Firebird had a terrible stumble off idle, hooked the scanner up and found the ignition system wasn't advancing the timing at all! No hair pulling necessary! Just a few ideas............... Lew __________________ Lew Silverman #2070 "The Wagon Master" N/SA