Need some help getting fed up !!

1314 Views 28 Replies 6 Participants Last post by TheGreenMachine, Dec 7, 2005

TheGreenMachine

Discussion Starter · Nov 24, 2005

Alright guys here goes, I recently bought a 1 owner 90 laser rs fwd turbo the car is bone stock still has the factory zip ties and vader helment on the bov nothing new what so ever. When i picked up the car the ecu was bad so i had it rebuilt car ran strong and pulled hard. I drove the car for a while and knew i had a leak on the timing belt side of the motor that had to be fixed. In the process got new t belt and all seals. I didnt feel comfortable at the time to do all the timing myself so i asked a fellow dsm guy to help me out. We got everything in time all marks lined up he reset the base timing but we didnt have a timing light so he said he could get it close by ear with the cas. I drove the car home no probelms pulled hard but had a slight hesitation. I parked the car overnight and went to drive it the next day just for the heck of it,I let it warm up and drove around the block when i got back the car started to act weird like it was towing something it would pull but seemed heavy. the the car starts to act like its missing and im getting some slight vibrations from the motor. Idle will flux but not much basically inbetween 1000 and 800 but the car dosent die. I know something isnt right but i havent had a chance to dive in yet. I was just wondering if adjusting the cas without using a timing light will cause these problems car ran good one day and the next seems down hill. any suggestions would be great thanks!!!

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belittle

· #2 · Nov 24, 2005

Sounds like the tension wasn't set right and the drive home or start up in the morning caused the timing belt to skip a few teeth.

I would check your timing marks first and see if they line up. Was the cas touched when you changed the timing belt? If it wasn't the base timing should still be on. When I change a timing belt on a 1g I always leave the cas in the same position so I don't have to use a timing light.

TheGreenMachine

Discussion Starter · #3 · Nov 24, 2005

I'm not for sure if the timing belt skipped a few teeth well on cam gears that is i havent had a chance to pull the timing cover. But yes he did mess with the cas without a timing light. Another thing i think is really odd when i turn off the car after it has been ran it sounds like the overflow tank for coolant is bubbling and I have been reading some post about that having to do with head gaskets? I'm going to check plugs and wires today also the mas just to be sure. Any other suggestions would be great !!

belittle

· #4 · Nov 24, 2005 (Edited)

TheGreenMachine said:
I'm not for sure if the timing belt skipped a few teeth well on cam gears that is i havent had a chance to pull the timing cover. But yes he did mess with the cas without a timing light. Another thing i think is really odd when i turn off the car after it has been ran it sounds like the overflow tank for coolant is bubbling and I have been reading some post about that having to do with head gaskets? I'm going to check plugs and wires today also the mas just to be sure. Any other suggestions would be great !!

Before you check anything else make sure the car is phyically still in time. Pull the top timing cover off and inspect. The bubbling indeed can be a sign of a bad headgasket. Have you coolant temp ever gone above normal or have you ever over boosted? If you do find the car is still in time I would then check your compression and see if you do have a blown headgasket. I highly doubt your headgasket is leaking if you are only running stock boost.

Also, check for boost leaks, vaccuum line disconnected, and mas unplugged.

TheGreenMachine

Discussion Starter · #5 · Nov 24, 2005

Well i pulled the top timing cover and from what i can tell the marks line up, I checked the mas and it seems to be plugged in no problems there. And as for overboost that has never happend and the car has always stayed at normal operating temps. I'm gonna do a compression test today and I will keep you updated on the results. Also if this will help any yesterday when the car started to run badly I could smell gas pretty strong like it was flooding but the car was running ? Sorry I cant really give a good description of all this stuff im new to the deal but I love the cars.

TheGreenMachine

Discussion Starter · #6 · Nov 24, 2005

Alright well i have some more news went to do the compression test but before i did figued i would turn the crank by hand to make sure the marks on time would line up perfact and what the hell it only goes to a certian spot and stops dead in its tracks !! what is this bent valves ?

NoNaMeS

· #7 · Nov 24, 2005

when you say stopped dead in its tracks, do you mean it takes more force to turn it, or it wont turn at all after that spot? on the compression stroke its supposed to be a bit harder to turn.

TheGreenMachine

Discussion Starter · #8 · Nov 25, 2005

I mean it comes to a dead stop no way physically to turn the crank any more after one point took out the plugs and they looked to be in great shape tried to turn the crank with them out and same thing comes to a certain point and stop.

belittle

· #9 · Nov 25, 2005

TheGreenMachine said:
I mean it comes to a dead stop no way physically to turn the crank any more after one point took out the plugs and they looked to be in great shape tried to turn the crank with them out and same thing comes to a certain point and stop.

Are you turning the motor in the right direction and by the crank? If you try to turn the motor over by hand fromt he cam gears it is VERY difficult. I also don't think you checked your timing right. Make sure the motor is at TDC. If you dont' know how to do this by looking at the crank pulley just put a screw driving in the #1 cylinder and find where its at the top of the compression stroke. Make sure the 2 marks on the cams are perfectly lined up at the 3 and 9 oclock position.

TheGreenMachine

Discussion Starter · #10 · Nov 25, 2005

Yeah the motor was at tdc checked all that and tried to turn either way i go it comes to a complete stop.

belittle

· #11 · Nov 25, 2005

TheGreenMachine said:
Yeah the motor was at tdc checked all that and tried to turn either way i go it comes to a complete stop.

Where are you turning the motor from?

TheGreenMachine

Discussion Starter · #12 · Nov 25, 2005

Turning it from the crank pullie with a 1/2 drive breaker bar.

laxdudeee

· #13 · Nov 25, 2005

just to make sure, you are turning it clockwise right?

does the car crank with a key?

TheGreenMachine

Discussion Starter · #14 · Nov 25, 2005

O yeah im for sure going clockwise and when i last shut the car off with the problems it was seeming to have yea it would turn with the key and start. just didnt run great at all

TheGreenMachine

Discussion Starter · #15 · Nov 26, 2005

Alright guys new update looked around im some of the forums and see where i could have bent some valves reason why the motor is stopping when cranked by hand is because the valves are meeting the pistons it was suggested that I pull the valve cover and check the rockers. Pulled the valve cover today and all the rockers are tight and everything looks visually fine. any suggestions?

belittle

· #16 · Nov 26, 2005

TheGreenMachine said:
Alright guys new update looked around im some of the forums and see where i could have bent some valves reason why the motor is stopping when cranked by hand is because the valves are meeting the pistons it was suggested that I pull the valve cover and check the rockers. Pulled the valve cover today and all the rockers are tight and everything looks visually fine. any suggestions?

The motor is going to be hard to turn. Don't be a pussy now and turn the motor. If starter can turn the motor over your not goign to do any damage. Your going to do 10 times more damage to the motor starting it with off timing then turning it over by hand. Again, double check timing and also get a good compression reading. Come back when you have done both. If the car ran fine before the timing job and now after its running like piss more then likely it has to do with the timing.

Make sure the dowel pins on the cams are pointing in the 12 oclock position.

belittle

· #17 · Nov 26, 2005

Also it might be a good idea to look for anything that is loose(like a connector), a boost leak, vaccumm line off, or injector seals. If your timing and compression are good then its time to look elsewhere.

TheGreenMachine

Discussion Starter · #18 · Nov 28, 2005

Alright i have another update!! Finally got to take the timing cover looked around at everything and from what i could tell it looked as if it was off a few teeth on the crank shaft sproket. I took the timing belt off and once again tried to turn the crank by hand and the motor actually done a full rotation and with good compression from what i could feel with my hand. so now what should i do or look for ?

belittle

· #19 · Nov 29, 2005

TheGreenMachine said:
Alright i have another update!! Finally got to take the timing cover looked around at everything and from what i could tell it looked as if it was off a few teeth on the crank shaft sproket. I took the timing belt off and once again tried to turn the crank by hand and the motor actually done a full rotation and with good compression from what i could feel with my hand. so now what should i do or look for ?

You actually uninstalled the timing belt???

TheGreenMachine

Discussion Starter · #20 · Nov 29, 2005

Yeah i did why there was no other way to get the timing marks lined up unless the t belt was off the motor was making 1/4 of the turn and comming to a dead stop like it was hitting a brick wall. I had no other choice

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