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M13a engine light and misfire.

  • walesy
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25 Sep 2018 14:52 #196260 by walesy
Replied by walesy on topic M13a engine light and misfire.
Well she lives. The thread chaser i bought was the double ended type. But you cant get a socket onto it because the big end doesn't leave enough clearance. So i went with the V coil system. Got the engine at TDC so the valves were closed. Using the re-threading tool supplied i packed it with grease and after every 2 turns i pulled it out and removed the swarf and old grease then re-packed it.
Looking down the plughole i could see some grease and some swarf on the top of the piston. used a welding rod to pick up the worst of this. I then used a long blowgun and nitrogen gas at 6 bar (No compresser) along with a can of contact cleaner. Sprayed a load into the head then used the blowgun to blow everything out.
De-greased the v coil then applied high temp loctite. Tightened the plug down and left it overnight. Fitted new coil pack started it up.
No smoke or weird noises. Revved it a few times then took it out for a drive for 10 miles around local roads.
temperature ok. No smoke or weird noises. The only issue is the engine management light stays on. But the car runs fine.
I know i've been very lucky to not do any further damage.
Thanks for the advice supplied regarding my options.

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25 Sep 2018 15:39 #196262 by yakuza
Great!!

Engine light will have to be reset with a tool you hook up to it, or you vcan try unhooking the battery for a while. Could help with five minutes, but a proper reset of half an hour will do it better i think.

Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
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28 Sep 2018 14:05 #196341 by walesy
Replied by walesy on topic M13a engine light and misfire.
Thanks that worked. Disconnected battery while i gave her an oil and filter change. That cleared the fault light.

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13 Feb 2023 14:00 #247595 by Alastair
If anyone is still interested, Wurth make a product called Time Sert.
Never tried them myself but if Edd China is to be believed, they're superior to heli coils.
Here's a link to him demo-ing them:

Readily available on ebay.

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