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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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 Posted: Thu Oct 19, 2006 4:15 am Post subject: |
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| Ozzie wrote: | I dont have a pic of the NA flywheel but the 10 degree mark is on the same side from zero as the one on the turbo from Z1.
The NA flywheel has a 10 degree mark on the other side as well and is ATDC as Nobbi said.
I have also heard of flywheels being put on wrong but the valve timing would also be way out if that was the case. |
if that were the case you could find out by first principles - sticking a kebab skewer (wooden!) or similar down sparkplug hole one and checking its physically at TDC etc... that'd at least prove whether the TDC mark is correct.
_________________
1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD 
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD |
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Mike924
Joined: 12 Aug 2004
Posts: 2601
Location: IoW UK
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| Posted: Thu Oct 19, 2006 5:17 pm Post subject: |
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| John Brown wrote: | | What happens when you buy $150US items for delivery in the UK? Tremendous tarrifs? |
Never tried, but I don't think it's too painful.
A friend of mine has an HSV Holden and he gets stuff from Oz all the time with no hassles.
(I think it's only Canada and the US who put huge tarrifs on each other's stuff...  )
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd
'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org |
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Mike924
Joined: 12 Aug 2004
Posts: 2601
Location: IoW UK
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| Posted: Thu Oct 19, 2006 5:24 pm Post subject: |
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| seanski44 wrote: | | ... you could find out by first principles - sticking a kebab skewer (wooden!) or similar down sparkplug hole one and checking its physically at TDC etc... that'd at least prove whether the TDC mark is correct. |
There are other marks on the camshaft sprocket and, more importantly, on the crankshaft pulley that can be used to help verify the flywheel TDC mark.
But Alan's problems don't seem to be timing related. He's not complaining about back firing or anything. Alan, I think a control pressure test is your top priority (if you can get it started, that is!); perhaps an injection speicalist can do this if you don't have the stuff yourself.
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd
'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org |
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alanf_uk2002
Joined: 31 Oct 2005
Posts: 31
Location: England, UK
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| Posted: Thu Oct 19, 2006 10:35 pm Post subject: |
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Hi Mike
I'm happy with the cam timing. I've verified TDC is as per the flywheel mark and the cam timing mark also seems correct. Starts first time and sounds sweet enough.
Absolutely must check fuel pressures. It's all pointing towards the control pressure. It may be a blocked line to the WUR or the warm up solenoid is dirty?
Will have to investigate.
Alan |
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Mike924
Joined: 12 Aug 2004
Posts: 2601
Location: IoW UK
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| Posted: Fri Oct 20, 2006 12:09 am Post subject: |
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I don't think the hot-start solenoid is very easy to remove from the fuel circuit because it shares a stacked banjo connection with (I think) the CSV, but you could test its effect electrically:
Unplug both spade connectors from the bottom of the solenoid and connect the terminals to a 12 V supply (e.g. directly to the battery) and see if there is any difference in the running/fuel pressure/air plate resistance with the solenoid powered or not powered.
If everything's working correctly, there should be a distinct drop in the control pressure, accompanied with very rich running, when the solenoid is energised.
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd
'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org |
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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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| Posted: Fri Oct 20, 2006 1:38 am Post subject: |
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| Mike924 wrote: | | John Brown wrote: | | What happens when you buy $150US items for delivery in the UK? Tremendous tarrifs? |
Never tried, but I don't think it's too painful.
A friend of mine has an HSV Holden and he gets stuff from Oz all the time with no hassles.
(I think it's only Canada and the US who put huge tarrifs on each other's stuff... ) |
I bought a soundcard from the US and after I'd paid shipping, plus the Duty (Tax) plus the handling charge from the shipping company it worked out only £5 cheaper than if I'd bought it here (though it took several weeks longer to arrive) - this also happened when I imported a set of Saris roofbars (only company I could find that still manufactures roof bars for the 968) from the states. these ended up costing a shed load of money and took so long to arrive that they didn't get used for the intended purpose (a three month ski trip to the alps) as I had to leave before they arrived!
anyway, its probably worth it if you can't obtain the goods in the Uk or if they are extortionate, but expect to pay up to 50% again in duty/charges unless you're savvy with the way the package is labelled and the shipping company you use.
Apologies for the long post, rant over!
_________________
1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD |
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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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| Posted: Fri Oct 20, 2006 1:41 am Post subject: |
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| Mike924 wrote: | | seanski44 wrote: | | ... you could find out by first principles - sticking a kebab skewer (wooden!) or similar down sparkplug hole one and checking its physically at TDC etc... that'd at least prove whether the TDC mark is correct. |
There are other marks on the camshaft sprocket and, more importantly, on the crankshaft pulley that can be used to help verify the flywheel TDC mark.
But Alan's problems don't seem to be timing related. He's not complaining about back firing or anything. Alan, I think a control pressure test is your top priority (if you can get it started, that is!); perhaps an injection speicalist can do this if you don't have the stuff yourself. |
Sorry, was responding to the previous post about flywheel marks being wrong. Checking the cam sprocket mark woudn't help you with that! 
Crankshaft, yeah, possibly, but the kebab skewer is for sure!
sorry, didn't mean to drag the post out, back to the real potential solution which sounds injector/fuel supply related.....
_________________
1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD |
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alanf_uk2002
Joined: 31 Oct 2005
Posts: 31
Location: England, UK
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| Posted: Tue Nov 07, 2006 7:23 pm Post subject: |
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Hi Guys
Having had a week in Cyprus to think about the problem I'm now thinking much more simple. So here's the thing.....the air filter and clip-on box are NOT fitted (easier to get to sensor plate etc.). So would this affect the engine's ability to rev? Hhmmm...
I'll try it when I'm back at the garage but just thought I'd get a yes or no from you guys first.
Answer's on a postcard please.
Cheers
Alan |
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