Author Topic: wont start after replacing head gasket?  (Read 6640 times)

Offline Dibz

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wont start after replacing head gasket?
« on: 01 February 2009, 17:57 »
just finished doing my head gasket  on my k-jet 8v gti and I've gone to fire it up but got no joy,
I'm sure that the timing marks are right on the cam sprocket (inside mark on sprocket level with front of the head) and the bottom pulley (level with the mark on the block) the ht leads are in the right order and I'm quite sure I got the injectors wired up right, cam belts tightened right (90 degree twist) so is the alternator belt and both oil and antifreeze have been filled up to the levels.

I had a spare battery on charge and fitted that hoping for the car but nothing it turned over a bit slow and gave a VERY small cough but wouldn't fire at all. Ive put the battery on charge again thinking that it didn't have enough juice to start it.

would the fuel system need to prime or turned over a lot to pump the fuel out to the injectors?
I've taken my time doing this head (never done one before on my own!) so its been sitting for a few months.
Is there anything i need to do to help fire up the car after doing this work?

Offline sidecarphil

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Re: wont start after replacing head gasket?
« Reply #1 on: 01 February 2009, 18:56 »
is the dissy timed up  :undecided: :undecided:

Offline Dibz

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Re: wont start after replacing head gasket?
« Reply #2 on: 01 February 2009, 19:18 »
I haven't done anything to the dizzy at all, but as i set the cam sprocket and bottom pulley marks i think it would be ok?
the car had a quarter tank of petrol in it just before the head went so it shouldn't be lack of fuel, fingers crossed its just the battery?

Offline sidecarphil

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Re: wont start after replacing head gasket?
« Reply #3 on: 01 February 2009, 19:22 »
i would check that the dissy is timed up mate

as you possably will have moved the pully inside the cam cover while putting the belt on

there is a notch in the dissy that should line up with the rotor arm when number one piston is at TDC

Offline DarnPB

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Re: wont start after replacing head gasket?
« Reply #4 on: 01 February 2009, 19:27 »
It's what he said!^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^


THE FORUMS NUMBER ONE ANTI-FOOTBALL FAN!!!

Offline Dibz

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Re: wont start after replacing head gasket?
« Reply #5 on: 01 February 2009, 19:36 »
I'll have to check the dizzy, and turn the engine over so all the marks line up again, if i take the sparkplug out of the first cylinder (cambelt side of block), I should be able to see the piston at TDC?
looks like I'm going to be working on the car rather than driving it in the snow next week.

Offline DarnPB

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Re: wont start after replacing head gasket?
« Reply #6 on: 01 February 2009, 19:42 »
I'll have to check the dizzy, and turn the engine over so all the marks line up again, if i take the sparkplug out of the first cylinder (cambelt side of block), I should be able to see the piston at TDC?
looks like I'm going to be working on the car rather than driving it in the snow next week.

Not at all. Its a very common mistake and TBH, most MKII's do not have their intermediate sprockets in the right place. They just re-adjust the timing as it's easier. The intermediate sprocket drives the distributor and the oil pump.
Rotate the engine to NO1 TDC. Remove the distributor cap and the rotor arm should point to a notch in the distributor body. If it doesn't, turn the dizzy until it does and see if it starts. When you get it started, get the timing done as per Rub Jonnies set up guide in the maintenance section.


THE FORUMS NUMBER ONE ANTI-FOOTBALL FAN!!!

Offline sidecarphil

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Re: wont start after replacing head gasket?
« Reply #7 on: 01 February 2009, 19:50 »
Not at all. Its a very common mistake and TBH, most MKII's do not have their intermediate sprockets in the right place. They just re-adjust the timing as it's easier. The intermediate sprocket drives the distributor and the oil pump.
Rotate the engine to NO1 TDC. Remove the distributor cap and the rotor arm should point to a notch in the distributor body. If it doesn't, turn the dizzy until it does and see if it starts. When you get it started, get the timing done as per Rub Jonnies set up guide in the maintenance section.
[/quote]
It's what he said!^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

mine was out too

Offline Dibz

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Re: wont start after replacing head gasket?
« Reply #8 on: 01 February 2009, 19:59 »
so I line up the marks on the bottom pulley and cam sprocket, the engine should now be TDC. then pop off the dizzy cap, loosen the distributor and set the mark on the rim of the dizzy so it matches the rotor arm. 
I had the cap off earlier to check the leads where set up right and remember the arm didn't match up to the notch so it looks like thats where the trouble is!

Offline sidecarphil

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Re: wont start after replacing head gasket?
« Reply #9 on: 01 February 2009, 20:09 »
your best off turning it at the cambelt sprocket mate , you could end up turning the dissy half a turn LOL