GoldenB19 Posted October 23, 2018 Report Share Posted October 23, 2018 Morning all First post here and need some help I have a really annoying cold start problem. ..... Its only present when the car is totally cold & stood overnight. Start the car roll off the drive pull off on idle to keep the neighbours happy and as I gentle accelerate she splutters and tries to die give get to end of the road and give it some more normal revs and splutters then clears and fine for the rest of the day! Now this morning she’s sat for 2x days turned the key she just kept turning over tried again kept turning over and as I let key off MASSIVE backfire! Poo’d a little then tried again and started fine!?!? Iv had it do this not start then back fire 2x other times as well when very very cold and also when very cold it has hunted as well when pulling up to traffic lights. My mapper suggested a big plenum vac leak as it was hunting and it’s prob sealing itself when hot checked it myself found nothing sent her in for a smoke test found nothing... I’m a bit stumped now and a bit pissed off my car is acting like uncle bucks on cold mornings lol thanks all John Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 24, 2018 Report Share Posted October 24, 2018 Map and log will be the best place to start: https://www.youtube.com/watch?v=_P1LRANeO4A GoldenB19 1 Quote Link to comment Share on other sites More sharing options...
Brad Burnett Posted October 24, 2018 Report Share Posted October 24, 2018 I suspect that the calibration may need a bit more post start or warmup enrichment fueling. GoldenB19 1 Quote Link to comment Share on other sites More sharing options...
GoldenB19 Posted October 24, 2018 Author Report Share Posted October 24, 2018 Here's my current map and a log I took and sent over to my mapper with the problem happening around 14sec in. If anything it feels like its overfueling especially when it doesn't start and then backfires JOHNBROWNR32GTST.pclr MON-10.09.18.llg How come its gets worse as the temps get colder on a warm morning you wouldn't notice a problem on a frosty morning struggle to get down the road Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 26, 2018 Report Share Posted October 26, 2018 Without a lambda connected we are shooting in the dark but comparing to a couple of other RB maps your warm up enrichment table has a lot smaller numbers in it especially around the 10-30deg region which would be a common cold start temp. So try the attached map, I have just copied our default warmup enrichment table into it. You can always change back to your map above if it doesnt improve. JOHNBROWNR32GTST warm up enrichment changed.pclr Quote Link to comment Share on other sites More sharing options...
GoldenB19 Posted October 26, 2018 Author Report Share Posted October 26, 2018 Thanks buddy I’ll give it a try and yea I’m wanting to get the link wideband as soon as I can afford to Purpleline 1 Quote Link to comment Share on other sites More sharing options...
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