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Old 12-06-2014, 11:34 AM   #1 (permalink)
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Default replaced head gasket now not able to turn motor over help

Thought the gasket was bad pulled head off and tested. Not warp or cracked. Got head back on motor and been fighting the timing of motor. Im not able to turn motor over by hand. It is on the mark at crack and cams but not able to turn by hand can hear a clank

I have both cams loose thinking valve hitting the piston. It still is stoping from turning over. I read that only turn clock wise. Im not sure if my helper turned it counterclockwise or not. If he did what to do.

Thanks a bunch
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Old 12-06-2014, 01:10 PM   #2 (permalink)
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if its not turning over with the cams out of the head (not just loose, bearing caps must be completely off and chain removed from cam) then you have a bigger issue, and quite often its a faulty manufactured head gasket hitting a piston or something with the chain (like a joining link hitting something, seen them put in with the clips on the rear side causing them to hit casting ridges as stopping the engines from turning over)


first thing is to not turn anything, if you do you will bend valves (if you haven't done so already)
Remove the chain off the cams (I usually remove the pulleys and chain from the cams as a unit) and once you have done so remove ALL the cam bearing caps to let the tension off the valves so they are all closed. You can now turn the crank (using a helper to hold the chain so it doesn't get caught or come off the pulleys) and line up the TDC mark, then set the cams in the right position, (from memory cyl 4 tdc compression cam lobes pointing up, cyl 1 should have valves "rocking" as in lobes pointing towards cyl) fit the chain to the pulleys in the right position, tighten the bearing caps to the correct torque then refit the pulleys to the cam(s). Of course you should confirm the timing marks with the manual before turning the engine over.

Gently turn the engine clockwise by hand and if there is no binding anywhere then you should be ok to do a compression test and check for bent valves. If the compressions ok, fine. If its down, then you have bent a valve and the heads coming off again.
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Last edited by 2013GV; 12-06-2014 at 01:15 PM.
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Old 12-06-2014, 06:09 PM   #3 (permalink)
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Thanks. Cams and belt is off, still not able to turn motor over
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Old 12-07-2014, 12:49 AM   #4 (permalink)
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Quote:
Originally Posted by charlesm View Post
Thanks. Cams and belt is off, still not able to turn motor over
Sounds like you might be taking the head off again to find out why. If the cams are out and the valves are all shut, there's not much that's going to stop it turning except something in a cylinder or something binding on the crank.
Being stupid here, is it in neutral? You can't harm it turning the crank with the cams out UNLESS you have already bent a valve and it's not closing fully. It might be safer to pull the head off and check everything carefully. Valves are easily checked by supporting the head and filling the combustion chamber with petrol or kerosene. Any bad valve seat seals will let it out into the exhaust or inlet ports.
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2015 5 dr Grand Vitara 2.4 (daily driver)
1971 V8 HG Holden with 383 stroker 9" torq lok and TH350 trans (the toy)
Mitzi RVR 2.0 (not one of my better buys)
the 2013 3 dr GV is now the off road only toy

"Dogs feel very strongly that they should always go with you in the car, in case the need should arise for them to bark violently at nothing right in your ear."
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Old 12-07-2014, 05:38 AM   #5 (permalink)
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Asking questions is not crazy or dumb. Its an auto trans so not it is in park. Im wondering if my helper turned it ccw would that have done anything oil pump

Thanks
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Old 12-07-2014, 07:39 AM   #6 (permalink)
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Ok this am I got head removed again. Tried to turn motor over clockwise (crank). Still not going around.

Really need help
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Old 12-08-2014, 04:22 PM   #7 (permalink)
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answered your PM. also 2013GV is very knowledgable im sure hell come up with something.
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Old 12-09-2014, 12:52 AM   #8 (permalink)
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ok, first thing to do is check for any items dropped in the vicinity of the crank pulley that drives the cam belt, the slightest bit of rubbish (like an old gasket scraping) can wedge and stop things from turning. The other option is something has been dropped somewhere and is catching on the flexiplate or ring gear. When you turn it (or try to) where is the "clunk" as it stops coming from? front or rear? you might have to start chasing things here, I'd possibly remove the starter motor as well to rule that out, its not likely to have done anything, but you never know what your buddy did when he turned it over.
While its not good practice to turn a motor in the opposite direction to normal, if you gently turn it anti clockwise how far does it go?

And another 2 dumb questions, were you missing any bolts or washers when you put it all together?
and, have you got the belt completely off ?(as in off the crank pulley as well? )
__________________
2015 5 dr Grand Vitara 2.4 (daily driver)
1971 V8 HG Holden with 383 stroker 9" torq lok and TH350 trans (the toy)
Mitzi RVR 2.0 (not one of my better buys)
the 2013 3 dr GV is now the off road only toy

"Dogs feel very strongly that they should always go with you in the car, in case the need should arise for them to bark violently at nothing right in your ear."

Last edited by 2013GV; 12-09-2014 at 12:55 AM.
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