RE: 4.3 CPI "W", pictures of replacement process for injector
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RE: 4.3 CPI "W", pictures of replacement proc... - 2/8/2008 10:11:41 AM
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Scott
Posts: 17
Joined: 2/5/2008
Status: offline
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Wow, great info. This repair cost me $800 in 2003.
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93 S10 4.3 4x4 W
I have defeated the heater core and the #3 spark plug.
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RE: 93 Blazer intake, with upper plenum removed. - 2/8/2008 1:03:45 PM
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94blueknight
Posts: 1515
Joined: 12/31/2007
From: Wisconsin
Status: offline
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quote:
ORIGINAL: ShadowHawk
quote:
I'll take picture of the process and do a little write up with them. In the Plenum picture, the fuel inlet (pressure) line is the line towards the outside of the plenum, the pinhole is just beyond where the plastic line attaches, shooting horizontal towards the outer wall of the plenum (the cleaner spot in the upper left corner). For those that do not know this, there are two drain hole in the lower plenum, one on each side. In my situation, fuel accumulates over that read plenum bolt until it crests the hump, then flows to the center where the hole is and over loads the left rear two cylinders with fuel, causing the rough idle and strong gas smell. When the regulator leaks, it runs right down the center where the hole is on the right side of the lower plenum and feeds directly into the front two cylinders on the right bank. These two drain holes are not visible in my photo. The hole on the right bank faces towards the firewall, the hole on the left bank faces the front of the vehicle, directly to the left of the middle lower plenum bolt.
Okay now.. This is VERY interesting... Tell me - what engine do you have? Is it a Vortec V6? That sounds a LOT like my symtoms that I've been having, and when I changed my plugs today, I noticed that Cyls 2, 4, 6 (all the passenger side of the engine) were ALL carbon fouled. Would this be something common to that side of the engine that would cause that in all 3 cylinders?
Thanks,
Rex S.
('95 Blazer 4.3 4Dr, 2WD Auto)
i had ur exact same problem! rough idle too right? w/ strong smell of sulfur from the exhaust? ya whats wrong is inside the plenum (as u can see from the previous posted pic of it) the plasic fuel lines inside the plenum r leaking fuel and dropping fuel into the driver side cylinders with too much fuel. the fuel lines only come from the dealer and run about $50 if i rem right. its pretty easy to replace just a lil time consuming. took me 2 days but that was cuz i needed to buy a locking torque wrench or something instead of the regular torque wrench it has a hole in the center like locking lugs to unlock it. its not to hard if u have any questions just send me a pm or post up on here
EDIT: ya its called a tamper proof torque u'll need
< Message edited by 94blueknight -- 2/8/2008 2:44:29 PM >
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