Author Topic: 22RE #1 cylinder misfire at idle.  (Read 1906 times)

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RN37DD

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22RE #1 cylinder misfire at idle.
« on: Jun 01, 2018, 04:43:05 PM »
The 22RE is in a 1986 4runner. The engine doesn't run smooth and #1 cylinder has almost no effect on engine speed when I remove the spark plug lead. The engine almost dies, when I remove the wires from #2,3, and #4 cylinder.  So far I've checked the compression. #1 was 170psi,#2 179psi, #3 165psi, and #4 175 psi. I checked and adjust the valves to specs, i set the idle and set the timing. I checked for vacuum leaks and found #1 injector seal was leaking. So I replaced all the injector orings and seals. I also tried switching spark plugs and wires. No effect.  #1 cylinder is sparking.  It still runs rough with # 1 cylinder being the weakest. All the spark plugs look clean, with the exception of #3 spark plug, it looks crusty.  The anti freeze looks clean with no bubbles. There is no water in the oil. I can hear #1 injector clicking, like it is working. I'm getting ready to pull the injectors again,  Is there anything else I should look at/test/adjust?   :headscratch:

Snowtoy

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Re: 22RE #1 cylinder misfire at idle.
« Reply #1 on: Jun 01, 2018, 05:00:44 PM »
What does the cap look like, might have carbon build up. :dunno:
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RN37DD [OP]

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Re: 22RE #1 cylinder misfire at idle.
« Reply #2 on: Jun 01, 2018, 05:18:36 PM »
The cap and rotor looks like it's new. I was told it was just replaced. But it's not impossible that defective. It did trigger the timing light with what looked like a consistent effect.  If I can't find anything else, I'll replace it.

OVRAROK

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Re: 22RE #1 cylinder misfire at idle.
« Reply #3 on: Jun 01, 2018, 06:47:46 PM »
When looking inside the cap. Where is the rotor making contact.
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emsvitil

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Re: 22RE #1 cylinder misfire at idle.
« Reply #4 on: Jun 01, 2018, 06:53:54 PM »
Ok, you moved the plugs around,    borrow a plug wire(s) from another car to test the wires.   
Ed
SoCal
86 SR5 XtraCab
22RE  W56B
31x10.50R15

Gnarly4X

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Re: 22RE #1 cylinder misfire at idle.
« Reply #5 on: Jun 01, 2018, 07:20:03 PM »
What do the spark plugs look like?
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

Gnarly4X

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Re: 22RE #1 cylinder misfire at idle.
« Reply #6 on: Jun 01, 2018, 07:23:00 PM »
Carefully pull the number 1 injector connector off injector and look at the contacts inside the connector.
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

Gnarly4X

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Re: 22RE #1 cylinder misfire at idle.
« Reply #7 on: Jun 01, 2018, 07:28:39 PM »
How many miles on the injectors?
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

RN37DD [OP]

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Re: 22RE #1 cylinder misfire at idle.
« Reply #8 on: Jun 01, 2018, 08:13:21 PM »
When looking inside the cap. Where is the rotor making contact.

It looks good. The rotor pass is about 1.5mm from the cap post.

RN37DD [OP]

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Re: 22RE #1 cylinder misfire at idle.
« Reply #9 on: Jun 01, 2018, 08:15:02 PM »
Ok, you moved the plugs around,    borrow a plug wire(s) from another car to test the wires.   

I just tried it. It still has the same misfire on #1. Spark but no fire.

RN37DD [OP]

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Re: 22RE #1 cylinder misfire at idle.
« Reply #10 on: Jun 01, 2018, 08:39:18 PM »
How many miles on the injectors?

The 4Runner has over 278000 miles on it. I was told the engine was rebuilt 50000 miles ago. The fuel injector look like they may be the original  injectors. The seal to the intake, on number 1 injector was cracked and the paint was washed off the injector body. I replaced the seals, but now I think I should have replaced the injectors too.


emsvitil

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Re: 22RE #1 cylinder misfire at idle.
« Reply #11 on: Jun 01, 2018, 09:00:41 PM »
I think it was Gnarly............   He had a bad electrical connector to the injector.
Ed
SoCal
86 SR5 XtraCab
22RE  W56B
31x10.50R15

RN37DD [OP]

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Re: 22RE #1 cylinder misfire at idle.
« Reply #12 on: Jun 01, 2018, 09:59:40 PM »
I replaced the connector to #1 injector when I did the seals. Mostly because it crumbled apart when I removed the injector. 2,3,4 still have the old connectors, I was to chicken to remove them after I broke #1.  :disturbed: If I replace the other injectors, I better get some more connectors too.

Mudder

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Re: 22RE #1 cylinder misfire at idle.
« Reply #13 on: Jun 02, 2018, 03:42:34 AM »
It could also be the ground down farther down the harness. Some people pull it all apart to solder them since Toyota used a crimp that can fail and not ground the injector properly.

OVRAROK

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Gnarly4X

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Re: 22RE #1 cylinder misfire at idle.
« Reply #15 on: Jun 02, 2018, 09:04:11 AM »
The 4Runner has over 278000 miles on it. I was told the engine was rebuilt 50000 miles ago. The fuel injector look like they may be the original  injectors. The seal to the intake, on number 1 injector was cracked and the paint was washed off the injector body. I replaced the seals, but now I think I should have replaced the injectors too.


If you have spark to the spark plug, and you have no mechanical issue with compression (and your compression check numbers look OK, then the misfire is most likely fuel related.  Just because you can "hear" the injector firing does not mean it's squirting the right amount of fuel into the cylinder.

If the injectors were not cleaned and rebalanced - or replaced - at 228,000 miles while the engine was supposedly being rebuilt, the rebuilder was stupid or ignorant.  Why would anyone that has an ounce of automotive engine knowledge believe that these injectors would function properly for that many miles - untouched.

Based upon your photo, my guess is that the injectors have never been touched and need replacing.  You could check out the cost of new ones, or you could email the boys at Witchhunter  https://witchhunter.com/   and get their opinion.

The little terminal clips inside the injector connector coming off the wire harness get brittle and will break or get pushed back into the connector housing.   Make sure those little terminals are clean and intact.


Here's link to check the connector:  https://www.yourmechanic.com/article/how-to-ensure-fuel-injectors-are-receiving-the-correct-voltage-by-spencer-cates

Gnarls.



« Last Edit: Jun 02, 2018, 10:00:36 AM by Gnarly4X »
1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

EASYRYDERDANGER

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Re: 22RE #1 cylinder misfire at idle.
« Reply #16 on: Jun 02, 2018, 12:26:18 PM »
Swap injector with another one. No need to buy a new one yet.  If no change you could always pull the shrader from your compression tester and do a running compression test. Compare results with known good cylinder...

RN37DD [OP]

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Re: 22RE #1 cylinder misfire at idle.
« Reply #17 on: Jun 02, 2018, 11:23:40 PM »
I replaced #1 injector with a new one. I only had to pull it apart 3 times before I finally got it.  :slap: It's running real smooth now.  :thumbs: Thanks for all the good idea's and help.

Gnarly4X

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Re: 22RE #1 cylinder misfire at idle.
« Reply #18 on: Jun 03, 2018, 07:00:13 AM »
I'm glad you got the misfire fixed.

To clean the injectors I put a can of Berryman ChemTool B-12 in a full tank of fuel about every 6 months.  If you do, you should put the can of Berryman in the full tank of gas just before you change the oil.  All that it cleans will end up in our crankcase oil.

https://www.autozone.com/fuel-and-engine-cleaners-additives/carburetor-cleaner/berryman-b-12-fuel-treatment/525253_0_0

Gnarls.

1986 XtraCab SR5 22RE 5speed W56B, ~26,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

RN37DD [OP]

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Re: 22RE #1 cylinder misfire at idle.
« Reply #19 on: Jun 03, 2018, 09:50:06 PM »
Thanks I'll check the ChemTool B-12 out. I checked out WitchHunter Performance, like you recommended. Good information on  injectors, cleaning and testing methods.   :thumbs:

 
 
 
 
 

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