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Trapping vechile #6915136
06/29/20 10:37 PM
06/29/20 10:37 PM
Joined: Mar 2008
Posts: 3,244
n.e, iowa
C
coonman220 Offline OP
trapper
coonman220  Offline OP
trapper
C

Joined: Mar 2008
Posts: 3,244
n.e, iowa
I replace the cast iron exhaust manifold 4 yrs back with converter integrated on it, common problem them is cracking, has had crack since Jan but not bad an warms up good it goes away, but when start on cold start. More do, , every start a lil, it runs rough for 10 seconds or a lil more until exhaust manifold metsl where crack expand an start seal leak, the shop Say a month ago that shouldn't hurt nothing ? Not bad on valves ? Or do somethknv to variable speed timing ? Thinking of blow up to whole $1000 bucks get fix. Not wsnt to go back an put off, a anyone know when start cold start an run rough 10-15 seconds until leak seal self. If possibly bad ?

Re: Trapping vechile [Re: coonman220] #6915148
06/29/20 10:49 PM
06/29/20 10:49 PM
Joined: Oct 2017
Posts: 2,911
perry co.Pa
wetdog Offline
trapper
wetdog  Offline
trapper

Joined: Oct 2017
Posts: 2,911
perry co.Pa
Is it groundhog day
I'm feeling like Bill Murray

Re: Trapping vechile [Re: coonman220] #6915150
06/29/20 10:50 PM
06/29/20 10:50 PM
Joined: Aug 2011
Posts: 26,357
james bay frontierOnt.
B
Boco Offline
trapper
Boco  Offline
trapper
B

Joined: Aug 2011
Posts: 26,357
james bay frontierOnt.
Never heard of a cracked manifold on an old clunker hurting anything.
Somebody trying to separate you from your money.

Re: Trapping vechile [Re: coonman220] #6915159
06/29/20 10:55 PM
06/29/20 10:55 PM
Joined: May 2011
Posts: 8,765
Oakland, MS
yotetrapper30 Offline
trapper
yotetrapper30  Offline
trapper

Joined: May 2011
Posts: 8,765
Oakland, MS
No, the shop said it wouldn't hurt anything. He thinks they're lying, lol.

Re: Trapping vechile [Re: coonman220] #6915160
06/29/20 10:55 PM
06/29/20 10:55 PM
Joined: Mar 2008
Posts: 3,244
n.e, iowa
C
coonman220 Offline OP
trapper
coonman220  Offline OP
trapper
C

Joined: Mar 2008
Posts: 3,244
n.e, iowa
The first time replace , much worse, I took shop, drove home. Drove old truck work, drove shop windows down, loud. ! Carbon monoxide go though vents st u , it was much worse crack, more concern if damage something on motor on cold start when run rough for 10 seconds until metsl expand an seal leak.

Re: Trapping vechile [Re: coonman220] #6915176
06/29/20 11:17 PM
06/29/20 11:17 PM
Joined: Feb 2010
Posts: 6,134
Henderson, N.Y. Jefferson Co.
W
walleyed Offline
trapper
walleyed  Offline
trapper
W

Joined: Feb 2010
Posts: 6,134
Henderson, N.Y. Jefferson Co.
Originally Posted by coonman220
The first time replace , much worse, I took shop, drove home. Drove old truck work, drove shop windows down, loud. ! Carbon monoxide go though vents st u , it was much worse crack, more concern if damage something on motor on cold start when run rough for 10 seconds until metsl expand an seal leak.



Sounds like your truck is junk.

Time to scrap it and buy a bicycle !!!

You are screwed, coonman !!!!

BOHICA !!!


Member: New York State Trappers Association,
Oswego County Trappers,
Jefferson Co. Fur Harvesters.

I Support Non-Resident Trapping Nation-Wide

Re: Trapping vechile [Re: walleyed] #6915182
06/29/20 11:30 PM
06/29/20 11:30 PM
Joined: Mar 2008
Posts: 3,244
n.e, iowa
C
coonman220 Offline OP
trapper
coonman220  Offline OP
trapper
C

Joined: Mar 2008
Posts: 3,244
n.e, iowa
Originally Posted by walleyed
Originally Posted by coonman220
The first time replace , much worse, I took shop, drove home. Drove old truck work, drove shop windows down, loud. ! Carbon monoxide go though vents st u , it was much worse crack, more concern if damage something on motor on cold start when run rough for 10 seconds until metsl expand an seal leak.



Sounds like your truck is junk.

Time to scrap it and buy a bicycle !!!

You are screwed, coonman !!!!

BOHICA !!!

Is everyone nearly as sarcastic as u in that part country ? Or is that u normally like ?

Re: Trapping vechile [Re: coonman220] #6915186
06/29/20 11:38 PM
06/29/20 11:38 PM
Joined: May 2013
Posts: 2,427
Green Bay, Wisconsin
tlguy Offline
trapper
tlguy  Offline
trapper

Joined: May 2013
Posts: 2,427
Green Bay, Wisconsin
Give walleyed a break, this is at least the third time you've asked about the exhaust manifold on your truck.

Re: Trapping vechile [Re: wetdog] #6915228
06/30/20 01:00 AM
06/30/20 01:00 AM
Joined: Jan 2017
Posts: 1,628
Ks
Flint Hill fur Offline
trapper
Flint Hill fur  Offline
trapper

Joined: Jan 2017
Posts: 1,628
Ks
Originally Posted by wetdog
Is it groundhog day
I'm feeling like Bill Murray

laugh

Re: Trapping vechile [Re: coonman220] #6915285
06/30/20 06:15 AM
06/30/20 06:15 AM
Joined: Dec 2013
Posts: 7,218
Greene County,Virginia
R
run Offline
trapper
run  Offline
trapper
R

Joined: Dec 2013
Posts: 7,218
Greene County,Virginia
Don't pay attention to Walleyed. He likes to rattle people. I think your truck is running ok. Just remember to check fluids and change the oil. I don't think you need to worry about the truck.

Re: Trapping vechile [Re: coonman220] #6915315
06/30/20 07:31 AM
06/30/20 07:31 AM
Joined: Dec 2013
Posts: 7,218
Greene County,Virginia
R
run Offline
trapper
run  Offline
trapper
R

Joined: Dec 2013
Posts: 7,218
Greene County,Virginia
X2 what dkrug says.

Re: Trapping vechile [Re: coonman220] #6915324
06/30/20 07:42 AM
06/30/20 07:42 AM
Joined: Oct 2009
Posts: 1,815
east central WI
K
k snow Offline
trapper
k snow  Offline
trapper
K

Joined: Oct 2009
Posts: 1,815
east central WI
A crack in the manifold will allow air into the exhaust, This fresh air in the exhaust can skew the readings of the oxygen sensors. Not a big deal for the sensor after the cat, but if it is the sensor in the manifold next to the head, this can affect the fuel:air ratio being supplied to the engine. That may be why it runs a bit rough when it is cold.

Re: Trapping vechile [Re: k snow] #6915332
06/30/20 08:01 AM
06/30/20 08:01 AM
Joined: Oct 2018
Posts: 2,590
Dunbar, Wisconsin
P
Pike River Offline
trapper
Pike River  Offline
trapper
P

Joined: Oct 2018
Posts: 2,590
Dunbar, Wisconsin
Originally Posted by k snow
A crack in the manifold will allow air into the exhaust, This fresh air in the exhaust can skew the readings of the oxygen sensors. Not a big deal for the sensor after the cat, but if it is the sensor in the manifold next to the head, this can affect the fuel:air ratio being supplied to the engine. That may be why it runs a bit rough when it is cold.

I've "heard" of guys replacing their O2 sensor with a dumby one that effectively bypasses that reading.

Re: Trapping vechile [Re: coonman220] #6915336
06/30/20 08:08 AM
06/30/20 08:08 AM
Joined: Feb 2010
Posts: 6,134
Henderson, N.Y. Jefferson Co.
W
walleyed Offline
trapper
walleyed  Offline
trapper
W

Joined: Feb 2010
Posts: 6,134
Henderson, N.Y. Jefferson Co.
Originally Posted by coonman220
Originally Posted by walleyed


Sounds like your truck is junk.

Time to scrap it and buy a bicycle !!!

You are screwed, coonman !!!!

BOHICA !!!

Is everyone nearly as sarcastic as u in that part country ? Or is that u normally like ?


Trying to give you some sound advice, coonman.

A bicycle would give you many years of useful transportation
and fewer parts to diagnose when you have a mechanical issue.

Scrap the Colorado and use the proceeds to buy a used, serviceable bike.

You'd save in repair bills, get good exercise, and help save the planet !!! laugh

It's a WIN=WIN situation for everyone !!!

You'd get dependable transportation, and we'd be spared a weekly diatribe
on your vechile woes !!! laugh

Carry on, coonman.

w


Member: New York State Trappers Association,
Oswego County Trappers,
Jefferson Co. Fur Harvesters.

I Support Non-Resident Trapping Nation-Wide

Re: Trapping vechile [Re: coonman220] #6915416
06/30/20 09:37 AM
06/30/20 09:37 AM
Joined: Nov 2008
Posts: 3,065
Illinois
R
ratbrain Offline
trapper
ratbrain  Offline
trapper
R

Joined: Nov 2008
Posts: 3,065
Illinois
Coonman --go to AutoZone and buy the compound that seals small holes and cracks in manifolds. I have used it and it works. Cheap too!

Re: Trapping vechile [Re: ratbrain] #6915519
06/30/20 12:11 PM
06/30/20 12:11 PM
Joined: Mar 2008
Posts: 3,244
n.e, iowa
C
coonman220 Offline OP
trapper
coonman220  Offline OP
trapper
C

Joined: Mar 2008
Posts: 3,244
n.e, iowa
Originally Posted by ratbrain
Coonman --go to AutoZone and buy the compound that seals small holes and cracks in manifolds. I have used it and it works. Cheap too!

Thanks for advice , but in cast iron, cracked. Replace is all do. My ancient junk 87-S10, which never drive much, save emergency vechile. Should be junked, would not trust all, or shutoff if went somewhere, N bad rust throughout an frame, not to safe. Anyway that has aluminum manifold an was successfully welded years ago

Re: Trapping vechile [Re: k snow] #6915528
06/30/20 12:19 PM
06/30/20 12:19 PM
Joined: Mar 2008
Posts: 3,244
n.e, iowa
C
coonman220 Offline OP
trapper
coonman220  Offline OP
trapper
C

Joined: Mar 2008
Posts: 3,244
n.e, iowa
Originally Posted by k snow
A crack in the manifold will allow air into the exhaust, This fresh air in the exhaust can skew the readings of the oxygen sensors. Not a big deal for the sensor after the cat, but if it is the sensor in the manifold next to the head, this can affect the fuel:air ratio being supplied to the engine. That may be why it runs a bit rough when it is cold.

There is a O2 sensor go right into exhaust manifold. Can't see if in converter, because shield, just concern when run erratic on cold start for 10 or more seconds because crack in manifold. Until metal hot expand an run normal that could damage valves. Or screw up timing, if goes out time. Ur motor is toast, the shop Say shouldn't do nothing motor, but exhaust in cab is not what want. I pretty sure at times, at idle an park few min or cold start , smell exhaust. , It been that way the same since first year, just wondering if thst rough idle at first until metal expand an stop leak an run right , if rough idle could screw up motor ? I believe my old truck did same thing crack manifold except worse. , Until welded.the cost an cast iron manifold ridiculous, at gm garage, it be over $1500, was bad gm design, evaporater drip water manifold weaken,

Re: Trapping vechile [Re: coonman220] #6915530
06/30/20 12:22 PM
06/30/20 12:22 PM
Joined: Oct 2009
Posts: 1,815
east central WI
K
k snow Offline
trapper
k snow  Offline
trapper
K

Joined: Oct 2009
Posts: 1,815
east central WI
A rough idle because of a weird oxygen sensor reading should not damage your motor that way. It may cause your spark pugs to foul, your converter to plug, poor fuel economy or a loss of power.

Exhaust in the cab is bad, exhaust gas is deadly.

Colorado's were not a shining example of GM (Isuzu) engineering.

Re: Trapping vechile [Re: coonman220] #6915597
06/30/20 01:19 PM
06/30/20 01:19 PM
Joined: Aug 2011
Posts: 26,357
james bay frontierOnt.
B
Boco Offline
trapper
Boco  Offline
trapper
B

Joined: Aug 2011
Posts: 26,357
james bay frontierOnt.
Didnt know you rode a bicycle walleyed.
Or are you one of those democrat "do as I say,not as I do" types.

Re: Trapping vechile [Re: coonman220] #6915619
06/30/20 01:31 PM
06/30/20 01:31 PM
Joined: Feb 2010
Posts: 10,132
pa
H
hippie Offline
trapper
hippie  Offline
trapper
H

Joined: Feb 2010
Posts: 10,132
pa
IF you can get at it, take it to a welder. It can be welded with either a spray welder or a high nickel rod like a 307.
Be me, if I couldn't weld it without taking it off, I wouldn't worry one tenth what you are about it.

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