Trapping vechile question
#7225912
03/24/21 11:30 PM
03/24/21 11:30 PM
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Joined: Mar 2008
Posts: 5,960 n.e, iowa
coonman220
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Posts: 5,960
n.e, iowa
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My cast iron exhaust manifold with converter integrated on it is crack, a common gm problem on 4 cyl, manifold under warrantee, had replaced last summer, wondering if anyone knows if ur cat was plug which cause a crack, which is probly not plug up, but if was cat plug up, would that likrly for sure trip a code ? My check engine lite works an is not on
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Re: Trapping vechile question
[Re: coonman220]
#7225941
03/25/21 04:14 AM
03/25/21 04:14 AM
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Joined: Dec 2006
Posts: 3,854 Pa
Wright Brothers
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Pa
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Echo Did you check for broken motor mounts?
Echo Did you check for broken trans mounts?
Echo Did you check for broken trans mounts?
Echo Did you check for broken motor mounts?
Last edited by Wright Brothers; 03/25/21 04:16 AM.
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Re: Trapping vechile question
[Re: coonman220]
#7225980
03/25/21 06:57 AM
03/25/21 06:57 AM
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Joined: Dec 2006
Posts: 29,888 williamsburg ks
danny clifton
"Grumpy Old Man"
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"Grumpy Old Man"
Joined: Dec 2006
Posts: 29,888
williamsburg ks
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If your catalytic converter was plugged up you would be losing power. That crack was likely the result of getting a hot piece of cast wet crossing a creek or something
Those who would give up essential liberty, to purchase a little temporary safety, deserve neither liberty nor safety. Benjamin Franklin (1706-1790)
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Re: Trapping vechile question
[Re: coonman220]
#7226022
03/25/21 07:55 AM
03/25/21 07:55 AM
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Joined: Feb 2018
Posts: 793 Norborne MO
BBarnes
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Norborne MO
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Plugged cat will throw a code however you will notice a reduction in power first. Cracked manifold can be caused by the manifold cooling to fast like snow or water splashing up in there or washing the engine while the manifold is hot. The manifold can get very hot if the cat is plugged however you should notice a power issue first. I’ve seen them plugged so bad that the vehicle would hardly pull itself down the road.
B
Last edited by BBarnes; 03/25/21 07:56 AM.
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Re: Trapping vechile question
[Re: BBarnes]
#7226028
03/25/21 08:05 AM
03/25/21 08:05 AM
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Joined: Oct 2009
Posts: 6,414 east central WI
k snow
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east central WI
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Plugged cat will throw a code however you will notice a reduction in power first. Cracked manifold can be caused by the manifold cooling to fast like snow or water splashing up in there or washing the engine while the manifold is hot. The manifold can get very hot if the cat is plugged however you should notice a power issue first. I’ve seen them plugged so bad that the vehicle would hardly pull itself down the road.
B We had quite a few 99-00 GM SUV's that would get plugged cats. You could just about walk faster than those things. Drop the Y-pipe off and the ran like race trucks. Fun diagnosis.
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Re: Trapping vechile question
[Re: coonman220]
#7226361
03/25/21 05:18 PM
03/25/21 05:18 PM
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Joined: Dec 2006
Posts: 9,134 Coldspring Texas
Savell
"Wilbur"
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"Wilbur"
Joined: Dec 2006
Posts: 9,134
Coldspring Texas
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... get full coverage, a match and a gallon of gas then have a vechile roast
Insert profound nonsense here
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Re: Trapping vechile question
[Re: Savell]
#7226575
03/25/21 09:11 PM
03/25/21 09:11 PM
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Joined: Dec 2006
Posts: 2,129 Lufkin, Tx.
Lufkin Trapper
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Lufkin, Tx.
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... get full coverage, a match and a gallon of gas then have a vechile roast Not legal, tater.lol
Billy Member # 16.
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Re: Trapping vechile question
[Re: Lufkin Trapper]
#7226606
03/25/21 09:38 PM
03/25/21 09:38 PM
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Joined: Dec 2006
Posts: 1,932 iowa
bankrunner
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iowa
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... get full coverage, a match and a gallon of gas then have a vechile roast Not legal, tater.lol Locate next riot area and park truck, hope for the best. Place Trump sticker on it.
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Re: Trapping vechile question
[Re: coonman220]
#7232793
04/01/21 05:50 PM
04/01/21 05:50 PM
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Joined: Mar 2008
Posts: 5,960 n.e, iowa
coonman220
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So manifold bad an replace today, not sure how many valves in I 4 on inline Colorado with dial overhead cam, but kinda twish noise on tick noise for months an months always same out tailpipe I hear, exhaust look decent I think, so could that be valves at 237 k? How tell if symptoms, not sure what call shop tomma ask after free warrnty replacement on manifold as start tick him off, unbelievable cost at shop though , what bad valve symptoms an what happen ? No check engine lite on
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Re: Trapping vechile question
[Re: coonman220]
#7232832
04/01/21 06:46 PM
04/01/21 06:46 PM
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Joined: Sep 2010
Posts: 2,785 Northern lower Michigan
Feedinggrounds
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Northern lower Michigan
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Are you putting additives in your fuel???? Plugged cat converters are kinda rare. The ones that do plug or restrict are due to ignoring for a long time, other problems. Then adding crazy snake oil fix it stuff...Hippie had a legit idea. Cast iron manifolds expand and contract, a lot. when the bolts don't allow movement they crack. I remember the small block Chevy V8 manifolds in the 90's that when unbolted required spreader tools to bolt back on. Or drilling out the holes and at times both drills and spreaders. In Michigan Colorado's fall apart from rust before the manifolds crack...
you're only allowed so many sunrises... I aim to see every one of them!
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Re: Trapping vechile question
[Re: coonman220]
#7232839
04/01/21 06:55 PM
04/01/21 06:55 PM
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Joined: Mar 2008
Posts: 5,960 n.e, iowa
coonman220
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n.e, iowa
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No additives any sort ever, 2nd aftermarket manifold, 1 last 4 years, this one last 6 months, I just ask disel tech other job an say if muffler plug, not blow manifold or crack it, ? probly small leak muffler ? I considered if happen be plug muffler that blow out new converter bfore shop in couple months when in service, unless noisevis valves go back, been hear lil noise exhaust months, manifold crack recently an replaced now , shop say have had problems with some manifolds on 4 cyl , not sure how many valves in this motor
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Re: Trapping vechile question
[Re: coonman220]
#7232845
04/01/21 07:09 PM
04/01/21 07:09 PM
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Joined: Mar 2020
Posts: 7,365 W NY
Turtledale
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W NY
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Time to just run it now. Hopefully this manifold hangs in there longer than the last 2. Good luck coonman
NYSTA, NTA, FTA, life member Erie county trappers assn.,life member Catt.county trappers
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