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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
10th Aug, 2007 at 07:31:01am
Anyone had similar problems to those described below? It's definately carb related. This is on the 998 turbo road car running a whopping 0.3bar (4.5psi).
Edited by wil_h on 13th Aug, 2007. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 2406 Posts Member #: 341 aka T2clubby South Staffs |
10th Aug, 2007 at 08:18:49am
Do you think it may be heat related?
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1303 Posts Member #: 30 Post Whore Epsom, Surrey |
10th Aug, 2007 at 08:20:22am
i assume it ticks over fine most of the time and that you have driven a good few miles and then some times wont tickover.
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
10th Aug, 2007 at 08:23:33am
What bimetalic strip. I have never rebuilt a carb so not 100% on issues.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
10th Aug, 2007 at 08:23:53am
When it won't start is it overfuelling or no fuel? E.g. are the plugs wet and black or dry?
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
10th Aug, 2007 at 08:30:09am
On 10th of Aug, 2007 at 08:20am Turbo Shed said:
i assume it ticks over fine most of the time and that you have driven a good few miles and then some times wont tickover. could be crap in the carb float chamber but not likely. could be fuel line size, fuel filter, fuel vapourising, fuel pressure regulator could be a vacum leak Crap seems unlikely (as you say) as when it on't tickover it still runs full boost no proble. The opposit of what crap would do I think. Fuel lines are 6mm feed and 8mm return, I'd expect any issues to affect boost conditions rather than tickover. fuel filter is clean Fuel vaporising is a thought, but the carb wasn't that hot (infact quite cool, even at the flaot bowl), the heat shield was doing a grat job. Pressure regulator could be set to high, possibly, but I'd have thought that this ould be a constant problem not intermittant. Vacuum leak, checked all pipes and all ok, again I'd have thought that this would be a constant fault rather than intermittant. Some grat ideas there though, cheers Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
10th Aug, 2007 at 08:31:24am
On 10th of Aug, 2007 at 08:23am Tom Fenton said:
When it won't start is it overfuelling or no fuel? E.g. are the plugs wet and black or dry? Good question, I never had a plug socket with me every time it stopped. On to check next time I test it. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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Site Admin  8506 Posts Member #: 16 Sold the turbo and seeing what the C20XE can do! Near Lincoln |
10th Aug, 2007 at 10:01:49am
i'd go with too rich at the bottom end |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
10th Aug, 2007 at 10:10:05am
On 10th of Aug, 2007 at 10:01am iain said:
i'd go with too rich at the bottom end ok, but what's making the fuelling change? It ran for 20mins no problem. Then went wrong, then later after me tea the same thing happened, but after a much longer time. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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8 Posts Member #: 1322 Junior Member Egham, Surrey |
10th Aug, 2007 at 10:16:19am
Could be the O rings on the choke assembly are perished and leaking. They cause intermittent problems and could be causing overfuelling which the motor will cope wit at high speed etc but won't cope low end and idle.
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2406 Posts Member #: 341 aka T2clubby South Staffs |
10th Aug, 2007 at 10:17:35am
I'd check the fuel pressure, then make sure the needle valve isnt allowing fuel through.
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 9327 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
10th Aug, 2007 at 05:04:06pm
that jet thing in the carb could be forked
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
10th Aug, 2007 at 05:08:01pm
On 10th of Aug, 2007 at 05:04pm Nic said:
that jet thing in the carb could be forked When it wont start, turn off the pump and see if it will then Pump dosent run when cranking, owing to my amazing wiring!! Tom, I've just been out to try and start it (from cold) and nothing. I've inspected the plugs out and they are dry. The is fuel in the float bowl as if I squeeze the return pipe it comes out of the jet, good test hu!. So it's carb off and strip down time I think. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
10th Aug, 2007 at 06:50:49pm
Pump dosent run when cranking, owing to my amazing wiring!!
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
10th Aug, 2007 at 09:24:59pm
When you switch on, the pump primes the system then stopps, it then starts pumping again when the engine starts.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 4360 Posts Member #: 1459 En-suite user Braintree, Essex |
10th Aug, 2007 at 10:00:19pm
Can dashpot spring do strange things like this? Had problems with one once. On 19th Jan, 2010 wil_h said:
I would start the furthest place from the finish. On 24th Mar, 2012 apbellamy said:
I feel all special knowing that I've given your mum my wood. Been neglecting Turbo'd 'A' series.............. |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
13th Aug, 2007 at 07:56:09am
Well it turned out to be shit in the jet believe it or not.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
13th Aug, 2007 at 02:15:34pm
super wil! good filter required now ?
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
13th Aug, 2007 at 02:27:01pm
I think the shit must have been post-filter or in the carb already, as I say, it was straight of another car untested.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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1303 Posts Member #: 30 Post Whore Epsom, Surrey |
13th Aug, 2007 at 03:34:00pm
On 10th of Aug, 2007 at 08:20am Turbo Shed said:
could be crap in the carb float chamber i'm just so good! hang on..... having trouble .... getting my....head through the door.. lol |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
13th Aug, 2007 at 03:37:40pm
Indeed shedboy, your hats should no longer fit. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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