timing belt gone wrong

[562DSMGST]

i am going crazy , i changed the timing belt , made sure everything was on point, made sure the oil pump turned counter-clockwise to know it was correct now i turn on my car and it vibrates horribly , i keep reading and it keeps saying its that, so i uninstall and reinstall the timing belt, now it keeps doing the same thing, i also noticed one of my lines that went to my fuel pressure regulatro was of, now my vac is down to 8 psi , so i reconnect it , it still gives me low vac psi , top things off the afc unprogrammed itself, so excuse my language wtf should i do ? (other than tellng me to take it to a shop)

 

[1990dsmkid]

Do you still have the balance shaft?

 

[pauleyman]

If vac changed chances are your marks are off. Check them again.

 

[562DSMGST]

If vac changed chances are your marks are off. Check them again.

if this is true then this is gonna be it, does it make the engine awfully shake , or misfire ?

Do you still have the balance shaft?

yes i still do , i did the test of turning the oil pump and seeing what way it turned after i let it go , which was counter clockwise

 

[pauleyman]

Of course. Balance shaft wont' cause any of that. Just vibration. Double check the marks.

 

[562DSMGST]

Of course. Balance shaft wont' cause any of that. Just vibration. Double check the marks.

thanks man imma get right to it in the morning , rain or shine.

 

[PaqueDSM]

Check the marks on timming belt and on the balance shaft belt... all must be on marks, the crank, the cams, the oil pump and the balance shaft.. Good luck!

 

[eclipsyco]

Check the marks on timming belt and on the balance shaft belt... all must be on marks, the crank, the cams, the oil pump and the balance shaft.. Good luck!

+1 Buena Cesar hahahaha!
To the OP do the screwdriver trick for the balance shaft belt! Must be spot on with the oil pump! Did you follow the VFAQ?

 

[WES_393]

i also noticed one of my lines that went to my fuel pressure regulatro was of, now my vac is down to 8 psi , so i reconnect it , it still gives me low vac psi , top things off the afc unprogrammed itself

Issues with your FPR and tuning device could easily cause issue with rough idle. It wouldnt hurt to give the timing marks another glance, but the other issues need to be addressed as well.

 

[562DSMGST]

Check the marks on timming belt and on the balance shaft belt... all must be on marks, the crank, the cams, the oil pump and the balance shaft.. Good luck!

Thanks sure will!

+1 Buena Cesar hahahaha!
To the OP do the screwdriver trick for the balance shaft belt! Must be spot on with the oil pump! Did you follow the VFAQ?

I did but i feel I'm probably a tooth or two off

Issues with your FPR and tuning device could easily cause issue with rough idle. It wouldnt hurt to give the timing marks another glance, but the other issues need to be addressed as well.

I reconnected the lines, now as far as my safc I'm going to put basic numbers for the hi/low then take it to tuning shop

 

[vicore]

Do you have both balance shafts?
For the oil pump balance belt: There are three rotations the counterweights pulls the mark to a point, only in the right rotation the marks are automatically aligning - in the other two rotations, the mark will be 120° or 240° off the right mark. (Finally you get the same result as with the screwdriver - i just didn't find the hole for the screwdriver when i changed the belt the first time )

 

[bigpatofpa]

If you're cams are off by as much as 1 tooth it will run rough. I've changed many tb's and every once and a while I manage to be a tooth off and it'll run like s*** . Make sure your mechanical timing is dead nuts before you adjust your tune. Nothing worse than "fixing it" and having to take it all apart again.

 

[562DSMGST]

Do you have both balance shafts?
For the oil pump balance belt: There are three rotations the counterweights pulls the mark to a point, only in the right rotation the marks are automatically aligning - in the other two rotations, the mark will be 120° or 240° off the right mark. (Finally you get the same result as with the screwdriver - i just didn't find the hole for the screwdriver when i changed the belt the first time )

haha so this is the part where i ask how do i know which one of the 3 is the right rotation ?

If you're cams are off by as much as 1 tooth it will run rough. I've changed many tb's and every once and a while I manage to be a tooth off and it'll run like s*** . Make sure your mechanical timing is dead nuts before you adjust your tune. Nothing worse than "fixing it" and having to take it all apart again.

your absolutely right , need to get this thing perffectly timed

 

[jb2zero0six5]

Rotate the oil pump to 12 o'clock position, if rotates counter-clock wise towards the timing mark, it's right. If it rotates clockwise away, rotate it again a full turn. The low vacuum does indicate improperly timed camshafts, especially if they're stock.

 

[vicore]

haha so this is the part where i ask how do i know which one of the 3 is the right rotation ?

When it rotates itself to the timing mark and not away from it. I'm sorry for my bad English.

 

[m1nd64m3]

When the afc reset did you switch the maf type back to karman vortex?

 

[562DSMGST]

so i just did a compression test 2 out of my cylinders get 0 psi , what now ?

does it mean my motor is bad?

 

[pauleyman]

If you did the test right it probably means the timing belt was so far off you bent valves. Leakdown test will show this also. If you search for my posts on timing belts you may have a better understanding of how it works.

 

[m1nd64m3]

so i just did a compression test 2 out of my cylinders get 0 psi , what now ?

does it mean my motor is bad?

If your valves and pistons met you would probably know it and the car wouldn't run at all. Are the marks all still lined up when you went to remove the belt after the first attempt? Did you use a new tensioner? It could have failed and your belt skipped some teeth.

But after you installed it did you turn the engine over by hand? I usually turn it over 8-10 times, then check to make sure everything is lined up, then let it sit for 15 minutes and turn it over another 8-10 times by hand and if everything is still lined up it should be good to go. Also by doing this you can make sure you're valves won't hit the pistons, of course unless the tensioner gives out. Also do you have the tensioner pulley rotated far enough?

But if the timing is off wouldn't a compression test not be very effective because you could have a valve open at all times through the stroke?

But are those 2 cylinders next to each other? I guess it's possible your headgasket could have given out, but seems unlikely if it ran fine before and instantly ran like shit when you started it again.

Just trying to give you some ideas.

 

[hotrodssnova]

Don't over think this. If the timing marks are not lined up, your compression is going to be way off. If you reset the timing belt to its CORRECT location, and then did the compression test, and got the 0 readings, then you more then likely bent valves.
Its pretty straight forward.

 

[pauleyman]

Agreed. Compression check isn't valid without mechanical timing being correct. So are the marks right or not?

 

[562DSMGST]

Agreed. Compression check isn't valid without mechanical timing being correct. So are the marks right or not?

they appear on time, the pistons go up and down properly but there seems to be no pressure coming from them , you could hear them and see them work properly , its the pistons 2 & 3

 

[pauleyman]

they appear

The question I posed is not subjective. It's yes or no. If you're not sure then you need to ask. This may hurt and I apologize but if you're not sure then you weren't qualified to do the job either.

Report back please.

 

[drewbuddy]

as well check harmonic balancer to make sure it hasn't shifted, (the rubber) they tend to separate and can throw off timing by a tooth or few. just an idea

 

[m1nd64m3]

as well check harmonic balancer to make sure it hasn't shifted, (the rubber) they tend to separate and can throw off timing by a tooth or few. just an idea

The harmonic balancer won't affect the timing belt unless it separates and eats through the cover and the belt. But the harmonic balancer shouldn't even be installed at this point since he isn't even sure if the timing marks are correctly lined up.