#454189 - 04/08/12 03:53 PM
Cold Start Problems
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 Site Supporter
Registered: 06/12/11
Posts: 146
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Hello, I've had this issue for a few months now, I thought it might be a mapping issue but my recent 165 upgrade hasn't fixed it. Basically my ST is quite rough on idle from cold (doesn't do it any other time). I'm thinking misfire, so potentially spark plugs/leads. I have Denso iridium plugs fitted around 2 months ago, so it could possibly be a dodgy plug? I've upped a video, please ignore the knocking, as the engine is moving slightly the lid on my airbox is being hit slightly. So just listen to the engine itself. http://www.youtube.com/watch?v=sRdJIvsDvQA
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#454191 - 06/08/12 09:39 AM
Re: Cold Start Problems
[Re: Ad89]
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Eat My Du
Registered: 24/01/12
Posts: 8193
Loc: Chelmsford, Essex
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im at work mate so cant watch video unfortunately.
mine is a pre facelift ST and would struggle now and again to start, although this is normally after short journeys rather than cold.
however, since i had the 165 fitted shes been fine (touches wood), only time she has struggled was after she hadnt been moved for a week.
im probably not much help to you im afraid
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East of England Rep Midge - MG ZR 105 (10-11) Stella - MR200 Fiesta  (11-15) Silky - R171 SLK280 (15 - ) 
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#454192 - 06/08/12 11:00 AM
Re: Cold Start Problems
[Re: sxkopite8]
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Registered: 11/06/09
Posts: 1930
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Left mine for 3 weeks and it started as it normally would... Sounds like a damp issue... Poor ht leads coilpack
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#454193 - 06/08/12 02:02 PM
Re: Cold Start Problems
[Re: nosnow3]
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Eat My Du
Registered: 24/01/12
Posts: 8193
Loc: Chelmsford, Essex
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Quote:
Left mine for 3 weeks and it started as it normally would...
shouldve worded it better, she started fine but was a very lumpy idle so needed a bit of throttle for a few seconds to tick over comfortably
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East of England Rep Midge - MG ZR 105 (10-11) Stella - MR200 Fiesta (11-15) Silky - R171 SLK280 (15 - )
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#454195 - 06/08/12 08:46 PM
Re: Cold Start Problems
[Re: Kev]
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MountooningTipster
Registered: 26/08/07
Posts: 11640
Loc: here
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I listened to that very carefully, quite a knocking noise, if you had this exactly before MT then we can rule that out, did sound like the K&N was hitting the top of the CAIS - which they do ! Can turn it slightly to avoid and I my CAIS is soundproofed so the carbon lid is protected from damage.
Anyway, it didn't sound internal to me, does sound misfire-ish or something blowing.
Have them plugs out again and, poor starting and idle sounds like TB, so check that out and clean.
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 MR200 Stage 3 200PS Evans Halshaw Mountune Pro
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#454197 - 06/08/12 08:57 PM
Re: Cold Start Problems
[Re: Ad89]
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Eat My Du
Registered: 24/01/12
Posts: 8193
Loc: Chelmsford, Essex
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Easiest thing to check then is the throttle body but I would've expected the mechanics to clean it quickly when fitting the kit 
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East of England Rep Midge - MG ZR 105 (10-11) Stella - MR200 Fiesta (11-15) Silky - R171 SLK280 (15 - )
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#454199 - 06/08/12 09:01 PM
Re: Cold Start Problems
[Re: sxkopite8]
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Registered: 11/06/09
Posts: 1930
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can you do a vid of the exhaust at the same time
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#454208 - 07/08/12 05:56 PM
Re: Cold Start Problems
[Re: EssexChelle]
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Registered: 11/06/09
Posts: 1930
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chelle, looks like you just purchased the car at the wrong moment...
if i was you i'd look at temp sensors and ignition systems before going into fuelling.
has anyone tryed resetting the ECU?
when my 1.4 split a coolant hose i needed my hazards and sidelights because i was in a dangourous situation, this left my battery flat and the ecu of course couldnt maintain its memory... after that though the flat spot i did have at times for overtaking never reared its head again and i had power all the time... Took me 30 minutes of driving to get it to idle again as it forgot how to idle and just couldnt do it!
(what im saying is disconnect the battery with your light switch on and make sure any system in the car is dead and re-connect after 24 hours turn all switchs off before re-connecting battery though)
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#454209 - 07/08/12 08:57 PM
Re: Cold Start Problems
[Re: nosnow3]
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MountooningTipster
Registered: 26/08/07
Posts: 11640
Loc: here
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I have listened very carefully and can now hear the pause in the idleing, could be coil pack on way out, does it actually misfire properly or just that tick over "RRRRR" "RRRRRRRR" ?
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MR200 Stage 3 200PS Evans Halshaw Mountune Pro
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#454211 - 07/08/12 09:08 PM
Re: Cold Start Problems
[Re: Ad89]
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MountooningTipster
Registered: 26/08/07
Posts: 11640
Loc: here
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did he get back to you
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MR200 Stage 3 200PS Evans Halshaw Mountune Pro
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#454213 - 07/08/12 09:27 PM
Re: Cold Start Problems
[Re: Ad89]
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MountooningTipster
Registered: 26/08/07
Posts: 11640
Loc: here
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think it's central email so needs to be made for his attention think.
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MR200 Stage 3 200PS Evans Halshaw Mountune Pro
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