7M GTE ignition timing guide needed...

[amebb]

Hi Bill, Yes i read that also about the strobe light being applied to ignition lead 6.

The problem that i have is that the car starts but the idle is very rough. So, i need to recheck the ignition and also the CPS and the full timing to make sure that everything is correct.

That way i can eliminate most possible issues with the engines timing.


What i am going to do is the following to set up my timming:

1 Open up the oil cap and turn the engine so that piston 1 is TDC. This can be done looking down the oil hole over looking piston 1.

2 Make sure that the exhuast and intake cam shafts are pointing to the markings on the back plate (if that makes sense).

3 The crank shaft pulley is pointing to 10 degrees.

4 Make sure CPS is inserted in correctly.

Then when that is all set and lets assume we have the ignition leads in correctly.
then start the engine and use the strobe to make the timing perfect.


I hope i can get this car working as it should be.... loads of fun to drive hmmmm


Thanks

[btwilson86]

Originally Posted by amebb

Open up the oil cap and turn the engine so that piston 1 is TDC. This can be done looking down the oil hole over looking piston 1

All this will do is let you see the lobe on the intake cam. If you have the upper timing cover off, just align the harmonic balancer with the notch at 0?. If the cam gears also align with the marks on the rear plate, your on the compression stroke. If not, then rotate the crankshaft 180?. If they still don't align, then you will need to loosen the timing belt and adjust the camshafts to correct your valve timing.

Also, be sure to install the cps with the crank at 0?, not at 10? BTDC.

[amebb]

Hi, thanks for that information. I will try that over the weekend and fingers crossed it will be ok.

I have the haynes manual and other manuals too so if i get stuck i have some kind of reference to assist me as well as this site.

Wish me luck ..lol

[Bill UK]

The crank shaft pulley marking should be at 0 (zero) not 10 degrees. Its only when the pins in the check connector box are linked and the engine is ticking over will the pulley be at 10 degrees. To check no 1 piston is at top dead center I normally remove the No1 spark plug and insert a thin wooden dowel rod.

[amebb]

thanks bill..... your correct it should be at zero and NOT 10 degrees - my fault.... need booze brain slooooow

I normally use that method that you told me to find TDC, spark plug 1 out, insert long rod and turn engine till you get TDC.

Thanks

[Bill UK]

Thinking about it, inserting a dowel into the piston to check TDC is a waste of time. You could be on the exhaust stroke or compression stroke depending on the cam position and crank markings. btwilson86 is the correct way.

[amebb]

Actually you are right about using the stick in cyclinder 1 method to check TDC, you could be looking at something that is 180 degrees out and that wont work will it.

So, using this stick method as well as what BTWilson86 has said is the best method i think.

Fingers crossed hey lol

[cre]

It's not a waste of time if you're just checking to see if the balancer is inaccurate, but unless you've also got the upper timing cover off so you can verify the cam timing, yes, it's not going to tell you a whole lot.

[amebb]

Hi there

I am still having some issues with my timing and due to that the car is idling eractly.

To explain what i have done:

a) Crank shaft aligned to the Zero Mark.
b) Intake and exhust cams are aligned to the nothe on the back cover.
c) If you remove the oil cover you can see the intake cam pointing the way it should.
d) The CPS is aligned as it should be ie drilled hole aligned with notch on CPS shaft.

This should be the correct way to get the timing correct. But, for some reason the car idles eractly and sometimes back fires.

Any suggestions as what to do here ?


Thanks