Anyone around Southampton have one. Now I got my car all up and running, I need to check the timing as I have the CAS off. I have no timing mark on the pulley so cant do it that way.

 

Thanks

Hello mate,

 

A Conzult/Datascan will only tell you the timing the ECU sees, you have to use a timing gun to get it spot on ;)

 

Vijay

I cant use a timing gun, as I said, theres no marker on the pulley.

Thats why I want to borrow a data scan.

 

I know its close, I just wanna make sure its right.

I know but I don't think you'd get the correct timing from the ECU :(

 

Vijay

I had this problem.

You need to get your engine at top dead center and mark the pulley to your TDC timing pointer.

I used a piece of plastic rod carefully placed into number one cylinder spark plug hole then turn the engine on the crank pulley nut so the rod rises out of the hole. When it gets to the top and starts to fall back, go back slightly. You must do this on the compression stroke or you will be 180 deg. out. Try marking both positions as you will never have the timing out far enough to see the wrong one. Just be careful what you place in the spark plug hole. Something plastic is preferable to prevent damaging anything, and make sure its long enough not to drop in completely or your going to have a bad day! Vijay is right you cannot set the base timing from the ECU.

So what timing is the data scan showing?

 

Im a bit confused now?!?!?!

Isnt the CAS saying when to fire and the ECU sees that, so surely its right?

The ECU assumes that the CAS is set at 15 degrees TDC and makes all its adjustments from that. If you watch your timing on a Datascan it moves forward and back depending on engine rev's etc. which is controlled by the ECU. It must have a datum point to start from though. If the ECU did all the work Nissan would not have made the CAS adjustable!

if you can see the timing mark use a proper timing gun, you need one which is ajustable, whilst pointing on marker, turn timing dial advance or retard via control you will then know how far out you are, if its massivly out then you may have a tooth or 2 out on one of the pulleys which means cambelt needs to be checked , if its slightly out then you can ajust via CAS if you have a cheap lightened crank pulley some of them dont have marks, which means you cant see the timing, :wack:

Looks like im fooked then, unless I put the old pulley back on and check, then put my other one on again. DOH DOH DOH.

 

Oh well, I know its pretty much in the right place, but I didnt scribe a line, so its not perfectly where it was. Doubt if its out that much.

Just for your info, Gaz has it. I am sure if you ask him he will plug it in sometime.

I might just ask, then I can find more problems and spend more money, lol.

I might just ask, then I can find more problems and spend more money, lol.

no problem let me know when you want to give it a go.