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Old 07-10-2008, 06:40 PM   #1
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Default New OS .21 TM - Very tight, sticking.

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I bought an OS .21 TM to replace my broken TRX 3.3, and while it seemed stiff to turn over by hand (only approaching TDC) without a glow plug installed, I didn't think much of it at the time. The engine is installed, with EZ start, but will only crank with the glow plug out of the engine, and after I added a tiny shot of WD40. If I install the glow plug, the starter cannot turn the engine past TDC. I can force it over with my finger, but it feels excessively tight. Is this normal, or is the engine a dud?
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Old 07-10-2008, 06:43 PM   #2
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normal

leave the glow plug a bit loose, you could also heat the engine up with a hair dryer that will help it turn over
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Old 07-10-2008, 06:43 PM   #3
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Yes it is normal. Back the glow plug off a bit to get the engine to start. Once it runs for a few seconds, tighten the plug. Stop squirting WD-40 in there or It will never start
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Old 07-10-2008, 07:10 PM   #4
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Very helpfull, thanks. I'll give it a try a little later.
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Old 07-10-2008, 07:35 PM   #5
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very normal on your typical race motor.
Just use a heat gun or hair drier and stop using wd-40.

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Old 07-10-2008, 08:46 PM   #6
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Was just worried about forcing it to crank without any lubrication, so I gave it a tiny bit of WD. It's a very tight engine, but will turn over with the plug in 1 to 2 turns. Sounded like it almost started before the battery pack died, so I'll try it again tomorrow WITH a hair dryer. Any other tips? How about after-run maintenence, is WD-40 a no-no?
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