Hi guys, a while back had a post about a backfire when I rev to 2000rpm and let it drop back to idle.

And felt a little flat like it was holding back.

 

Changed every sensor on the bloody car, coils even injectors the other day.

 

I only found problem by accident today, tried turning cas fully anti clockwise and problem gone lol.

 

All I can say Is my timing gun must have had it, cause been setting to 15btdc so many times and it's been the same pop pop bang bang.

 

Been using no1 coil, not the loop.

 

Thing is set another z up the otherday with my light and that's fine.

 

Cause I had the light and trusted it didn't even think to turn it further lol.

But the cas is almost fully turned anti clockwise and had belt off otherday and belt timing is spot on.

 

Didn't replace belt with new one, so do you reckon belt is stretched and having to turn cas fully or do you reckon my light is telling the truth and I have another problem still.

 

Gonna check with another light tomorrow.

 

Anyone had anything like this before.

 

Thankyou.

I would have said if the cas is turned fully anticlockwise it compensating for the timing being out, if my understanding of how it works is correct.............

I took belt off and put it back on to make sure it's spot on by the marks on the belt not marks on covers,

checked that cause thought that could be the problem before found the problem lol.

Done a lot of z belts to so can safely say it's 100% right.

 

Unless belt has stretched and causing problems.

 

Bloody zeds lol.

Hi everyone.

 

Stripped z down tonight and marks are spot on using back covers.

So trying another belt see if there's a differance.

 

Still unsure if the belt could stretch, and even if it did would it still not be 15% using gun but further anti clockwise on cas.

Using gun it's saying 15% roughly just pass middle of cas.

 

If not something else must still be wrong, pulls great and no popping but I know it just ain't right so can't leave cas where it is fully to the left.

eerrmm your not missing the locating key on the cas unit ?

Just a thought ,have you tried a different ecu?

Do you mean the slot type part on the back of cas that slides into the camshaft if so that's there and slotting in properly.

 

Tried another ecu a while back all the same.

 

Sure someone told me once that when the belts are a bit worn the cas has to b adjusted further and further to the left.

 

Cheers for the replys guys.