Fouled plugs... :( and lots of other problems

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Fouled plugs... :( and lots of other problems

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Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> Silverado >> Fouled plugs... :( and lots of other problems

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Fouled plugs... :( and lots of other problems - 4/18/2008 8:46:37 AM

TylerWalker

Posts: 11
Joined: 4/18/2008
Status: offline

ok i've got an 04 1500 5.3 v8. heres whats wrong.. rough idle, buzzing noise comin from exauhst at 2000rpm(65mph) only when i'm on the gas. poor gas milage. my ces readings are as follows. 1)random misfire 2) 02 sensor bank 2. 3) cat running inneficiently bank 2. 4) 02 sensor-system running too lean, bank 2.
I changed out my plugs and wire 3 weeks ago thinking it would fix the idle, it helped but didnt fix, now the 4 plugs on the left side of my engine when looking at the engine are all fouled already.
Is my cat bad? causing the 02 to read bad, causing my engine to foul out those plugs? i'm helpless here people!
Any ideas?!?!
Thanks!!!!!!!!!!!!!!!!!

Post #: 1

RE: Fouled plugs... :( and lots of other problems - 4/18/2008 9:17:32 AM

northey87

Posts: 847
Joined: 10/17/2007
Status: offline

Welcome to the forum!!! How many miles are on the truck? and how bed is the gas mileage?

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''''95 1500 Silverado, 350, flowmaster Force II exhuast, S&B CAI.

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RE: Fouled plugs... :( and lots of other problems - 4/18/2008 9:21:20 AM

ZX1100F1

Posts: 2429
Joined: 8/1/2006
Status: offline

Leaking intake manifold gasket, but this may not be all of your problem.

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Dave

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Post #: 3

RE: Fouled plugs... :( and lots of other problems - 4/18/2008 9:50:37 AM

TylerWalker

Posts: 11
Joined: 4/18/2008
Status: offline

99,750 miles

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Post #: 4

RE: Fouled plugs... :( and lots of other problems - 4/18/2008 9:51:42 AM

TylerWalker

Posts: 11
Joined: 4/18/2008
Status: offline

What problem would the leaking manifold gasket be connected to?

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RE: Fouled plugs... :( and lots of other problems - 4/18/2008 9:53:22 AM

TylerWalker

Posts: 11
Joined: 4/18/2008
Status: offline

gas mileage is at 12

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Post #: 6

RE: Fouled plugs... :( and lots of other problems - 4/19/2008 9:48:14 AM

06chevy5.3

Posts: 137
Joined: 2/5/2008
Status: offline

sounds like a bad cat to me, had one in the shop 2 days ago with the same problem,

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Post #: 7

RE: Fouled plugs... :( and lots of other problems - 4/19/2008 7:44:25 PM

ehhget

Posts: 343
Joined: 1/22/2008
Status: offline

thats a nightmare that is intersting.

06 chevy why would the cat cause that, by causing the 02 to call for to much fuel? but why just one side of the engine?

maybe it could be the 02 on that side of the engine before the cat sending to much fuel to those injectors

< Message edited by ehhget -- 4/19/2008 7:47:22 PM >

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01 Silverado 5.3L 4X4
01 Camaro SS LS1 SLP
70 Nova SS 350

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RE: Fouled plugs... :( and lots of other problems - 4/21/2008 5:44:22 AM

TylerWalker

Posts: 11
Joined: 4/18/2008
Status: offline

ya it is a nightmare. i'm frustrated! but the code from the ses light said it was #2 o2 sensor on bank two. my cat is making a buzzing noise as if a baffold broke lose inside of it and is buzzing from the exhaust.. so i'm pretty sure my cat is bad..

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Post #: 9

RE: Fouled plugs... :( and lots of other problems - 4/21/2008 9:43:08 PM

ehhget

Posts: 343
Joined: 1/22/2008
Status: offline

Thats to many problems to figure out without having it tested. Spend the 95 bucks and find out whats up before you go nuts.

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01 Silverado 5.3L 4X4
01 Camaro SS LS1 SLP
70 Nova SS 350

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Post #: 10