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Which way to go

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=156963
Printed Date: 22 Aug 2025 at 3:04am
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Topic: Which way to go
Posted By: JW in MO
Subject: Which way to go
Date Posted: 05 Jan 2019 at 9:23pm
Bought a cheap 02 Isuzu Trooper supposedly with bad lower engine knock, I have a 98 with an excellent engine I was planning to put in it, not a perfect easy transfer but doable.  With my bad hearing I got a second opinion but sure enough the knock is on the top side.  Pulled the plugs, bore scope won't go past spark plugs but I can see what appears to be  carbon in #5 cylinder.  Further inspection shows all valves working.  Now it's a question of pulling the head or just go with the engine swap.  The knock is bad, it has to be if I could locate it by sound.  Can't imagine any elixir that would dissolve the carbon and not wash out a bearing if it got down that far.  Back in the old days we'd pour water down the carburetor as fast as it would take it but that was before fuel injection and catalytic convertors.


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Replies:
Posted By: Dakota Dave
Date Posted: 05 Jan 2019 at 9:36pm
Seafoam in the injection rail.


Posted By: jaybmiller
Date Posted: 05 Jan 2019 at 9:39pm
do the engine swap . that way you'll have a car to get around to buy the parts after you've torn the bad one apart....
me, I'd try fixing the bad engine,get nowhere, and have to swap the engines anyway....

Jay


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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water


Posted By: shameless dude
Date Posted: 06 Jan 2019 at 12:13am
ad dextron tranny fluid in the gas tank, i'd put2-3 quarts in the tank if it's full on gas. you sure it's not just a cracked exhaust manifold?


Posted By: JW in MO
Date Posted: 06 Jan 2019 at 8:50am
Originally posted by jaybmiller jaybmiller wrote:

me, I'd try fixing the bad engine,get nowhere, and have to swap the engines anyway....

Jay

That is exactly my thinking and luck.


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Maximum use of available resources!


Posted By: DMiller
Date Posted: 06 Jan 2019 at 9:09am
Most of the late model engines had built in piston slap to accommodate engine temperature changes better without seizing. Many of my old GMs did, now Fords and foreign manufacturer equipment is doing it. I wonder if not picking up on that with piston head carbon buildup.



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