95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

fouling plugs

Old Sep 27, 2003 | 03:28 PM
  #1  
mudboy's Avatar
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From: jasonville, indiana
Angry fouling plugs

I got an 85 toy pickup 4x4 with a 22r in it and it is carbed. the problem is i just put this engine in it and it keeps fouling the #4 plug. I can take it out and dry it off (gas soaked) and it will run fine for a few minutes and then it will miss , take it out and dry it off or change it and it will do it all over again, new cap, wires, timing is ok, adjust carb...I have tried bosh platium, ngk, champion, autolight plugs with all the same results, even tried a hotter plug and then tried a colder one ......HELP it is driving me nuts was susposed to go wheeling this weekend but cant get it running right ........ thanks for the help
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Old Sep 27, 2003 | 07:17 PM
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Sometimes plug can just go bad. You can replace it with a new one or swap it for one of the other ones and see if the problem follows the plug.

If the problem continues in the same cylinder, you can test the injector by swapping it with one in another cyclinder and see if the problem follows the injector.

Gadget

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Old Sep 27, 2003 | 07:35 PM
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From: Kansas
try checking the compression, if #4 is running alot lower then the other chambers you might have a bad valve.
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Old Sep 27, 2003 | 09:19 PM
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From: Lacey, WA
hey gadget, he's got a carbed engine so it doesn't have injectors

i'd say switching the plug out or just replacing it would be the first thing to do, while you're at it just change all the plugs(if they're not new) and check the compression while they're out
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Old Sep 28, 2003 | 02:53 AM
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From: jasonville, indiana
:pat: never thought about checking the compression on it , working all night and working on the truck for a few hours in the morning leaves little time for the brain to relax and sleep ....LOL.... thanks for the info will try that out
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Old Sep 28, 2003 | 04:43 AM
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From: Montreal, QC Canada
Is that plug even firing?

It might be jet black but never gas-soaked if you do have spark.
Gadget would be correct to look at the injector if you weren't carbed.

Last edited by MTL_4runner; Sep 28, 2003 at 04:45 AM.
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Old Sep 28, 2003 | 04:59 AM
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From: Southern MD USA
Well then it is an ignition problem then. Wires, plug or further up the line.

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Old Oct 4, 2003 | 10:48 AM
  #8  
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From: jasonville, indiana
well it works, i had to drive it over to a buddys house and it was missing like crazy and blowing black smoke out real bad. he live 5 or 6 miles from my house and i was giving it hell on the way there i thought if it wont run it will blow up !!!!(engine was gave to me) about half way there the plug finally kicked in and off it went like someone lit a fire in it behind..... WOOHOOO now it is time to go wheeling and mudding .....
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