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The, engine starts...runs rough, idles poorly. I marked the dist, and the rotor to the firewall, marked the dist in whiteout at the rotor button position. I aligned the factory white mark with the dimple at the bottom of the dist shaft. All looked well when I reinstalled, but..... I need...

I purchased the new dorman 800-401, and it dont want to seat properly. I have pushed rotated for a sweet spot, and still will not 'click' in. Is the black washer from the old one necessary? Is there a magic trick? I was hoping to crank this thing up today :sad72: Suggestions? My old stock...

I guess my question could be shortened to if i donot have quick disconnect at the firewall ....i'll not need the o rings in the kit, as the new spider comes with o rings installed? Am i ok.....

Spider fuel 'O' rings I just did not think about setting it @ TDC???? I have another question, naturally. I look down into the fuel line connection on the spider, and I see 2 yellow 'O' rings installed. Question is I have 2 small 'O' rings that came with the FelPro gasket kit. Do I...

Distributor alignment question Ok major question First I'm not at TDC. I have included 3 pictures of the distributor marked as I removed it. My question is ...based on the provided pictures. If I align the dimple on the bottom of the distributor shaft, with the GM white marks on the lower...

last bolt Double checked this morning ...there is a bolt in the rear, but it is recessed not extended out like the rest. little mirror on an extension is a good thing. Upper half is off. :happy160::happy160:

I did feel for more fasteners, but found none. Upper manifold does rise more than an inch in front enough for the manifold to clear the ejector body thingy. It does feel like its bolted ....... Start again tomorrow, lots of little time consumers have slowed progress.

upper intake wont come off All the bolts are out...checked twice. upper plastic manifold has released in the front, but not the rear. Again Idont want to break this part. need a quick answer if there is one, see the picture. always appreciated, Ron

Did, thanks

Intake gasket replacement Feb 17 Thanks that what I thought, appreciate it ...have another question see the picture, I cant pull this of from either end. Need help

'O' rings gas line Any know where to purchase the gas line 'O' ring seals at the fire wall, or ...if I dont have the quick disconnect , I should'ent need 'O' ring set ......right? If I need'em a vendor please... I cant find one. Just trying to line up the ducks...... Ron Second thought...

throttle body question Thanks for the response...I purchased the metal scissors type for early GM. Perhaps they wont be needed. Have another question..... The throttle body blade modification............. What improvement should be expected? Any one done this mod.??? I have some warm...

I'll be disconnecting at the firewall to remove the intake manifold. If I have to have the disconnect tools ...I dont know what size or type get. Ron

Gas line tool Another question.... Do I need the gas line tool to disconnect gas lines, or just a wrench? If I need the tool.... which is best, plastic or the scissor metal kind. Any ideas appreciated, gathering parts, info, and tools for the gasket/spider replacement. 1999 yukon 5.7 Ron

when do you replace the accumulator??? I have 133,000 miles now. Checking my old receipts I found that I replaced in 2009 the compressor, manifold assembly, drier (assuming accumulator),orifice tube, condenser. At a tidy sum I might add. I was going to replace the accumulator and orifice...

Thanks .....I had convinced my self that my 99 Yukon knock sensors were located under the intake, My Bad. I had watched so many UTubes that they blended together, it also saved me about $120, so thanks again. I have ordered off Amazon the following parts The Ac Delco spider, Felpro Manifold...

Intake gasket/spider/knocker replacement lesterl reply: Knockers: My Yukon is a 99.... 2 knockers under the intake. Disconnect: I'm putting on the new quick disconnect,,cause I dont know what Home Depot part to replace it with?? Front brakes: I'm looking at those front brakes also...

upgrade My Yukon was purchased new in 1999, and now has 144,000 miles on it. I have had the intake gasket leak for some time now and have been working around it for years. My fix has been to mix up a 50/50 antifreeze solution and when the coolant over flow tank is near empty fill it...

which one??? From what I've read the Delphi is ready to install...not to sure about the AC Delco something about 'O' rings and such. I am also reading this note when looking at Delphi products. 'Note: Delphi partners with other manufacturers to supply the parts your car was originally...

Been a while since I've posted, but need to work on my Yukon again. I went over to Amazon to check prices on the Delphi fj10566 ($414) injector upgrade, and when it came up, it said it would not fit a 1999 Yukon. From all the reading I've done here recently I dont believe that is correct. The...