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Message started by ohio thumper on 04/30/11 at 08:55:23

Title: tdc question
Post by ohio thumper on 04/30/11 at 08:55:23

just finished putting in new cam chain. my question is, when i turned the nut around to find tdc if i went a little too far the piston would drop. with new chain, clutch cover and stator cover back on it doesnt do it any more. i have to turn the nut on down stroke also now. is this normal or did i get something too tight?

Title: Re: tdc question
Post by verslagen1 on 04/30/11 at 09:00:54

idk, hear anything?

Title: Re: tdc question
Post by ohio thumper on 04/30/11 at 09:07:05

havent fired it up yet. wanted to make sure that it being stiff to turn would be normal before i go tearin something up trying to start it.

Title: Re: tdc question
Post by verslagen1 on 04/30/11 at 09:11:31

turn it by hand 1st, don't want to smack anything at speed.

Title: Re: tdc question
Post by ohio thumper on 04/30/11 at 09:20:27

i dont hear anything when turning by hand, just feels stiffer than it used to.

Title: Re: tdc question
Post by verslagen1 on 04/30/11 at 09:42:25

Maybe just a bit dry then, give her a go.

Title: Re: tdc question
Post by ohio thumper on 04/30/11 at 10:02:14

cool deal. thanks for the help

Title: Re: tdc question
Post by Serowbot on 04/30/11 at 10:25:56

Makes a difference if you have the sparkplug in or out... Compression gives it a push...

Is that it?...

Title: Re: tdc question
Post by Oldfeller on 04/30/11 at 10:31:44

Nope, the push normally comes from the valve springs coming back off full compression.

Likely he has something acting all stiff and rough like .....

If you can roll it freely by hand, try rolling it with the starter motor with no plug.

If the motor won't turn it over, then you got issues to fix.

If the motor will turn it over, give it a few gos (letting the starter cool off between goes of course) and see if it doesn't loosen up some.

Then do it again with the plug in place to make sure it will turn over against full compression.

Title: Re: tdc question
Post by justin_o_guy2 on 04/30/11 at 10:45:09

1D3E3634373E3E3720520 wrote:

Some solid advice..

Title: Re: tdc question
Post by Serowbot on 04/30/11 at 10:46:51

5E7D7577747D7D7463110 wrote:

Nope, the push normally comes from the valve springs coming back off full compression.

Dang you're smart!... I never thought of that...

Throw my theory out the window... ;D...

Title: Re: tdc question
Post by ohio thumper on 04/30/11 at 10:55:24

will try what oldfeller suggested. thanks for all the input guys.

Title: Re: tdc question
Post by ohio thumper on 04/30/11 at 10:57:13

spark plug was out when i was turning by hand. still have a few things to put back together and will be able to try. will post my results

Title: Re: tdc question
Post by justin_o_guy2 on 04/30/11 at 13:36:55

3C2A383B22252A3F24397A727C7B4B0 wrote:

spark plug was out when i was turning by hand. still have a few things to put back together and will be able to try. will post my results

Hopefully, the "results" will fit in one frame of the camera..

Title: Re: tdc question
Post by ohio thumper on 05/07/11 at 05:46:06

well i gave it a few goes with starter after cranking by hand a few times. it finally started with a little persuasion with starting fluid in the beginning, no slapping or clanking parts.
think i might need a new battery though. this one just doesnt seem to have enough gusto to crank on it, even after charge. gives me a reason to get a sealed battery anyway.
would a funky battery cause the decomp to work intermittantly, or is this a whole new problem that i have to deal with?

Title: Re: tdc question
Post by justin_o_guy2 on 05/07/11 at 08:43:44

Possibly, loss of enough current to hold h solenoid in on the decomp? Possibly,,

Youll know right after you put the new battery in..

Title: Re: tdc question
Post by verslagen1 on 05/07/11 at 09:12:37

5E485A594047485D465B18101E19290 wrote:

would a funky battery cause the decomp to work intermittantly, or is this a whole new problem that i have to deal with?

:-? what makes you think it working intermittently?

Title: Re: tdc question
Post by justin_o_guy2 on 05/07/11 at 09:15:11

Good point, it only pulls in for a fraction of a second,, Just long enough for the starter to get the piston flying along, & flywheel a spinnin,,

Title: Re: tdc question
Post by ohio thumper on 05/07/11 at 12:58:29

i think its intermittent because sometimes it clicks and sometimes it doesnt. when i first noticed that i didnt hear the decomp click, i started watching it everytime i hit the starter button. sometimes it would work and sometimes not.

Title: Re: tdc question
Post by verslagen1 on 05/07/11 at 13:30:57

the adjustment could be a little loose that would affect it.

I'd put a volt meter on the decomp lead and see if it was getting power every time.