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-   -   acceleration issues and exhaust leaking (http://www.toyota-supra.info/forums/mkiii-supra/17617-acceleration-issues-and-exhaust-leaking.html)

Green7mgte 08-19-2010 06:43 PM

shitty idle.. poor acceleration. all the things that your experiencing now.
see above for explanation on what the cams do..


Quote:

Originally Posted by cre (Post 86995)
It does. Depending on how it shifted it can drastically increase engine heat OR it can drastically increase exhaust temps (if it's the exhaust cam); If it's the intake cam it can cause the intake valves to close too soon, choking the engine; or it can close it too late allowing a pulse to disrupt the incoming airflow, again choking the engine but in a very different way.
! :bigthumb:

Quote:

Originally Posted by btwilson86 (Post 87020)
being out of alignment can cause the vehicle to not spark in time. If the spark happens too early or too late, it will cause the vehicle to not fire.

wilson is talking about the cps.
but moral of the story is.. IF things arent TDC and your timing is off.. you will have shitty engine proformance.. + hazard

cre 08-20-2010 12:05 AM

You can stop the cams from spinning by just putting a 10mm socket on one of the rear timing belt cover's bolts (one of the four behind the cam gears) and rotate until one of the spokes binds on the socket/extension. Have someone hold it in place if you can't work with a wrench in each hand (sissy.).

cre 08-20-2010 12:06 AM

Quote:

Originally Posted by btwilson86 (Post 87016)
Everytime I messed with my timing belt, I pulled all slack out of the belt on the intake side, slipped the belt onto the gears (with them aligned properly), then let the tensioner take out all of the slack in the belt. Doing it this way allows all belt slack to be between the exhaust cam gear and crankshaft timing gear, meaning nothing will move while tensioning the belt.


Don't know if that's the right way to do things, but it's worked great for me and keeps it as a 1 man job

Turn the crank one full rotation (DO NOT ROTATE VIA THE CAMS) to move any excess slack to the position between crank and exhaust cam. :bigthumb:

Green7mgte 08-20-2010 03:51 AM

Quote:

Originally Posted by cre (Post 87031)
Have someone hold it in place if you can't work with a wrench in each hand (sissy.).

or if all else fails.. you can hit it with your purse...:p

cre 08-20-2010 04:02 AM

I lol'd! :rofl2:

zby67 08-20-2010 04:44 AM

Quote:

Originally Posted by Green7mgte (Post 87038)
or if all else fails.. you can hit it with your purse...:p

lol ok thats kinda funny!

anyway thanks for all the info!! it really helps and learned what not to DO! lol

ok the cams are off but the drive shaft is dead on so turn engine over till cams line up the take off the belt and turn the drive shaft till it lines up? or is there a better way of doing this?

zby67 08-20-2010 04:57 AM

oh and if i do work with one ratchet its not cause im a "sissy" its cause i would like to do this right. granted it should of been right the first time. but i should have this all fixed tomorrow before i leave for work at 4.

now what do you guys advise on my caliper issue? iv been thinking just saving up and putting all new ones on but if they can be fixed ill go that route cause the screeching is starting to annoy me lol.

zby67 08-20-2010 01:36 PM

ok if its one tooth off shouldn't she be back firing or idling wrong?? i dont want to be taring into this engine and reset the engine found out it wasnt it and have a chance to be late for work.

zby67 08-29-2010 05:17 AM

ok she is back up and running!!!! i bought new rear shocks to be put in next paycheck and will be fixing an oil leak behind the cams at the same time prob even flushing out the trany


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