Just replaced timing belts on my 89 GL EA82 followed the link on here, turn crank till 3 marks one cam up turn crank 180 other cam up turn till timing marks install dist adjust to 20deg

 

idles perfect but backfires and now power driving

 

Please Help:eek:

Edited September 12, 201114 yr by pepsiguy

Sounds Like one of those belts is one or two teeth off...

What firing order did you use?

wasn't my first thought but i bet Qman has your demon covered, so start there.

 

you pulled the distributor? if so, double, triple...more...check the alignment, they're easy to mess up and seem unclear sometimes.

 

turn crank till 3 marks one cam up turn crank 180 other cam up

i think you mean 360, which is what it should be, or i'm reading it wrong.

1,3,4,2

And yes 360 deg not 180

could the crank be off 180?

Edited September 13, 201114 yr by pepsiguy
added content and spelling

Did you mean you turned the CAM 180? If you only turn the crank 180...actually, I have no idea what would happen. Turn the CRANK 360, which will spin the first cam (assuming it started with the mark pointing up/lined up with the valve cover seam/timing belt cover notch) so it is pointing down, 180 degrees from where it was.

When you rechecked the timing marks what were the locations of the gears?

I just did this. When I put the belt over the tensioner it pulled the cam to the left one tooth. My bro said it was right, It wasnt. I ended up getting it right on the 3rd shot.

 

Make sure thy line up exactly, I looked through the hole in the cam pully and centered the valve cover gasket in it.

 

now all im waiting on is a petcock for my rad.

 

good luck

1,3,4,2

And yes 360 deg not 180

could the crank be off 180?

 

1-3-2-4 is correct order.

rechecked cam gears

Flywheel at three marks

left is at 12 oclock in line with the grove in the cover

Right is at 6 oclock position

turn flywheel 360 deg to three marks Again

now left at 6 oclock

and right is at 12 oclock

 

firing order was set 1,3,2,4

 

is it possible the valve lash is way off from last person to work on it

is it possible the valve lash is way off from last person to work on it

has hydraulic valve lash adjusters, doubtful anyone ever messed with it and doubtful that's the lone cause of it not starting.

Did you plug the green test connectors when you set the timing?

Timing set with fining light to 20 deg with green conectors connected

 

Like I said idles perfect but no power and backfires under load

 

Yes I did unplug green after setting timing

 

And no codes what so ever

:banana:figured out the problem by accident

 

unplugged map sensor and prob solved just needed to clean it now car is perfect

 

thanks everyone for all the input