Author Topic: 8v Digi wont start after head rebuild :(  (Read 2101 times)

Offline Bigdunc

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8v Digi wont start after head rebuild :(
« on: 09 July 2011, 16:00 »
Hi guys im having serious problems with my 8v (digi) after head rebuild

head has been skimmed, valve stem seals replaced, tappets have had oil pushed out and valves re-lapped

we have head back on car and all timing set correctly

bottom crank pully is set to TDC and marks in gearbox hole match up
Dizzy pully have set, rotor arm to the mark on the dizzy
and cam pully set to match with rocket cover markings

problem we are having is the engine turns over but it wont start, We have a good spark.

We are getting smoke comming out the intake system most prob burnted fuel

it seams like the car is over fueling and drowning out the plugs .

we have tryed few things such as turning the dizzy to see if timing is a bit weak but no joy, all sensors and idle valve are in place

can anyone chuck me some ideas?
Thanks

Offline Mr Blue

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Re: 8v Digi wont start after head rebuild :(
« Reply #1 on: 09 July 2011, 16:04 »
180 deg out?
« Last Edit: 10 July 2011, 16:20 by Mr Blue »
:)

Offline Bigdunc

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Re: 8v Digi wont start after head rebuild :(
« Reply #2 on: 09 July 2011, 16:14 »
yes fuel pump sounds ok to me, and i was just this monent thinking about it being 180d out, its a job for tomorrow as we packed up for the day now

Offline Bigdunc

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Re: 8v Digi wont start after head rebuild :(
« Reply #3 on: 10 July 2011, 10:59 »
Any more ideas guys?
Could it be we need to build up compression somehow or maybe a faulty ecu

Offline molegti

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Re: 8v Digi wont start after head rebuild :(
« Reply #4 on: 10 July 2011, 12:48 »
All the earths back on properly - frying the ECU seems to be a recurring issue.

Offline Mr Blue

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Re: 8v Digi wont start after head rebuild :(
« Reply #5 on: 10 July 2011, 13:15 »
also are the leads in the right order? the distributor plug area can be a problem these.

I had spark but mine wouldnt start after it was timed up. I swapped the ignition mod thats ontop of the ecu and it fired up.

May not be your case but worth noting.
:)

Offline Bigdunc

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Re: 8v Digi wont start after head rebuild :(
« Reply #6 on: 10 July 2011, 14:43 »
The intake won't suck in air seams to be blowing out, think that's the main problem

Offline Mr Blue

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:)

Offline mk2bal

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Re: 8v Digi wont start after head rebuild :(
« Reply #8 on: 10 July 2011, 16:46 »
Sounds like timing...

Offline Bigdunc

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Re: 8v Digi wont start after head rebuild :(
« Reply #9 on: 10 July 2011, 16:58 »
It does indeed but everything lines up ok, I think it may be a problem from befor the head done,symptoms b4 head rebuild were same except had loads of oil on plugs, now we don't have the oil as valve stem seals have been changed.

We get a spark on plugs engine turns and cranks but just wont suck in air