Timing Advance. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ruffrida2005 · 06-08-2010, 11:59 AM

I got a 92 with the 2.5 Iron duke. I was driving home last week and my truck started to sputter like it was out of fuel. I had 1/4 gas left. I got pulled over after I lost power and it just shut off on me. After looking under the hood everything looked alright. so I started it back up. It was idleing fine. Put it in gear start to drive about 50' it starts to sputter again. I've been having a hard time starting it, but it would run good. If I got on it I could smell fuel.

Anyways. I got the truck back to my friends and pulled the coil off since I thought that was the problem. Took it to autozone and tested it, and it was out of the ohm range. So I got everything to do a tune up. I pulled the plugs and they were white. I was using bosch platinum singles. The cap the contacts on the inside were also white. Ok got it runing lastnight, and checked the timeing and it's set at 35* advanced. I'm wondering if this is what it's supposed to be set at. I was reading in the haynes book that the timing being set too much advanced would casue the plugs to turn white.

I'm installing a tach to see what I'm idealing at because it sounds a little high to me.

What should my timing be set at?

Tink · 06-08-2010, 01:06 PM

Timing should be 8 BTDC on these...

68C15 · 06-09-2010, 06:59 AM

you also need to check the timing with ECM command removed. follow the procedure on the underhood sticker.

06-08-2010, 11:59 AM	#1
ruffrida2005 Member of the longbed union. Join Date: Feb 2009 Location: Killeen, Tx Posts: 2,158	Timing Advance. I got a 92 with the 2.5 Iron duke. I was driving home last week and my truck started to sputter like it was out of fuel. I had 1/4 gas left. I got pulled over after I lost power and it just shut off on me. After looking under the hood everything looked alright. so I started it back up. It was idleing fine. Put it in gear start to drive about 50' it starts to sputter again. I've been having a hard time starting it, but it would run good. If I got on it I could smell fuel. Anyways. I got the truck back to my friends and pulled the coil off since I thought that was the problem. Took it to autozone and tested it, and it was out of the ohm range. So I got everything to do a tune up. I pulled the plugs and they were white. I was using bosch platinum singles. The cap the contacts on the inside were also white. Ok got it runing lastnight, and checked the timeing and it's set at 35* advanced. I'm wondering if this is what it's supposed to be set at. I was reading in the haynes book that the timing being set too much advanced would casue the plugs to turn white. I'm installing a tach to see what I'm idealing at because it sounds a little high to me. What should my timing be set at? __________________ Paul 88 GMC Crew Cab dually, 454/T400 64 LWB 400 HP 350/350T Bagged, under construction! Sold most of it! 92 S10 Iron Duke 5 speed, 5/7 drop for now. soon to be bagged. Sold http://67-72chevytrucks.com/vboard/s...59#post4637759

06-08-2010, 01:06 PM	#2
Tink Registered User Join Date: May 2002 Location: VA Posts: 1,337	Re: Timing Advance. Timing should be 8 BTDC on these... __________________ 69 Chevy C10 88 Sierra 02 2500 Suburban And too many S10s to list!

06-09-2010, 06:59 AM	#3
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: Timing Advance. you also need to check the timing with ECM command removed. follow the procedure on the underhood sticker.



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