Electrical problem 940

[Ammorack]

Okay, I was feeling again with this screwdriver and turned the engine fast to get a better understanding. I think I found TDC now. It’s right when the piston goes down. And so I turned crankshaft counter clockwise. (I know I’m not supposed to do it) but I think I got it now.

I always thought it was timed correctly out the information from camshaft marks and crankshaft.
But I didn’t thought of doing it with a screwdriver. This may be the problem right? If I’m not doing it wrong

[Ammorack]

I’m confused now.

[Laird Scooby]

Originally Posted by Ammorack

I tried again with this piston stopper.
I think it’s too long, so it hits before TDC. I unscrewed that piston stopper so it could hit TDC and I unplugged it and tried again with a screwdriver and feel where TDC is. I think I have found TDC. Not sure
The second picture with the green color on the left side is where the markings for crankshaft is. And pulley is supposedly out of specs?

That confirms exactly what i suspected. Just enough to retard (or advance, depending on your view point) the camshaft by 1-2 teeth.

If you use your tool in the plug hole again, turn it clockwose until the piston is stopped by the tool, paint a mark on the crank pulley inline with the TDC mark on the timing cover, remove the tool and continue turning the crak clockwise then refit the tool, Turn the crank ant-clockwise and when the tool stops the piston again, paint another mark on the pulley in line with the TDC point on the timing cover.

Measure the distance between these two paint marks, divide that distance by 2 and make another paint mark that distance from one or other of the either side of TDC marks in the middle. This should be exactly TDC so turn the crankshaft until this new mark lines up against the TDC pointer on the timing cover and the camshaft is somewhere near where it should be and (take a phot of the camshaft pulley at this point please!) see where the cam is. Wouldn't mind betting it's 1-2 teeth out from where it should be!
That would also explain your consistently high across all 4 cylinders compression readings!

[Ammorack]

Originally Posted by Ammorack

I’m confused now.

Originally Posted by Laird Scooby

That confirms exactly what i suspected. Just enough to retard (or advance, depending on your view point) the camshaft by 1-2 teeth.

If you use your tool in the plug hole again, turn it clockwose until the piston is stopped by the tool, paint a mark on the crank pulley inline with the TDC mark on the timing cover, remove the tool and continue turning the crak clockwise then refit the tool, Turn the crank ant-clockwise and when the tool stops the piston again, paint another mark on the pulley in line with the TDC point on the timing cover.

Measure the distance between these two paint marks, divide that distance by 2 and make another paint mark that distance from one or other of the either side of TDC marks in the middle. This should be exactly TDC so turn the crankshaft until this new mark lines up against the TDC pointer on the timing cover and the camshaft is somewhere near where it should be and (take a phot of the camshaft pulley at this point please!) see where the cam is. Wouldn't mind betting it's 1-2 teeth out from where it should be!
That would also explain your consistently high across all 4 cylinders compression readings!

Damn, you’re killing me, Dave xD

I’ll try my best. Thanks

[Laird Scooby]

Originally Posted by Ammorack

I’m confused now.

You've already done what i was suggesting in my last post Ammo, the cam is definitely timed wrong if you're sure you've found TDC on the crank isn't in fact where the nothc on the pulley is in relation to the timing marks on the timing cover!

Unless i'm mixing the pictures up, the cam timing is retarded compared to where it should be (although advancing the cam would have similar effects) so will cause the ECU to think it's running lean.

You may have to readjust the idle speed and the TPS after getting the cam timed right but hopefully not.

[mocambique-amazone]

I did read the full thread till now, sorry.
Don't trust the marks on the crank pulley. This harmonic balancer is prone to twist the inner and the outer part. You will find a lot of pics inside the Internet.
Only the screw driver will tell you TDC. Or the mark on the crank gear, pulley removed.
I'm short in time, I will read the rest later, maybe tomorrow
Good luck, Kay

[Laird Scooby]

Originally Posted by mocambique-amazone

I did read the full thread till now, sorry.
Don't trust the marks on the crank pulley. This harmonic balancer is prone to twist the inner and the outer part. You will find a lot of pics inside the Internet.
Only the screw driver will tell you TDC. Or the mark on the crank gear, pulley removed.
I'm short in time, I will read the rest later, maybe tomorrow
Good luck, Kay

That's the theory i'm working on now Kay, i'd forgotten about the twisting torsion damper on the pulley until yesterday but have asked in the past areas of the thread to check the cam timing - one of my first ideas if memroy serves.

Of course, with it twisted, it will give the wrong results so hopefully we have some progress now!

[Ammorack]

Originally Posted by Laird Scooby

You've already done what i was suggesting in my last post Ammo, the cam is definitely timed wrong if you're sure you've found TDC on the crank isn't in fact where the nothc on the pulley is in relation to the timing marks on the timing cover!

Unless i'm mixing the pictures up, the cam timing is retarded compared to where it should be (although advancing the cam would have similar effects) so will cause the ECU to think it's running lean.

You may have to readjust the idle speed and the TPS after getting the cam timed right but hopefully not.

Like so? I measured it between those two markings I made. 5,5cm divided by 2 equals 2,75cm and made a new mark. Turned crankshaft to that mark and here’s a picture of the cam also

1 tooth 🦷 away

[Laird Scooby]

Originally Posted by Ammorack

Like so? I measured it between those two markings I made. 5,5cm divided by 2 equals 2,75cm and made a new mark. Turned crankshaft to that mark and here’s a picture of the cam also

1 tooth 🦷 away

I can't see the marks on the crank pulley? On the cam pulley, it looks like the cam is retarded, one tooth behind where it should be?

If so and you are happy you've now got the true TDC position, set it up on the new true TDC, slacken the timing belt adjuster locknut, lever the adjuster away from the belt and temporarily lock it in position. Use this extra slack in the belt to move the cam to where it should be, get the belt back on, release the locknut on the adjuster/tensioner and allow it to tension the belt, lock the lock nut.

Turn the engine two full turns and recheck your new timing marks and TDC on the cam pulley. Release the locknut on the tensioner and allow it to take up any slack then lock it again.

Try it!

The idle may be higher now but we can deal with that later.

Little tip, with the timing belt slack, turn the cam pulley 1/2 a tooth further than you need to to aid getting the belt on, as the tensioner takes up the slack, this half tooth over will disappear but makes life much easier!

Good luck!

[Ammorack]

Well well well

This timing belt is stretched or this tensioner is bad????

I have adjusted camshaft now 👍🏻👍🏻

https://youtu.be/NcTtl0nJD4Q