High CO / Poor hot starting

Leads, coils, plugs, starters, starting probs etc.

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Re: High CO / Poor hot starting

Postby Steve A » Wed 12.07.2017, 21:31

:D Thanks for your help and suggestions John and Simon :smt023
"If everything is under control, you are going too slow."
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Re: High CO / Poor hot starting

Postby Simon_P » Wed 12.07.2017, 21:48

Hi John,
Lotus spec. is 1.8 to 2.2 ohms. Outside that is rejected.
So 2.5 is a 12% to 30% error depending on how you look at it.

They are always in parallel so the effect is always 100%
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Re: High CO / Poor hot starting

Postby Steve A » Thu 13.07.2017, 12:18

As suggested I have reset the ECU.
I was going to set the base timing but discovered my strobe light leads are to short :roll: so I need to make up some extensions
I then went for a spirited drive :burnout: and then rechecked the plugs (the gap is 0.8 ).
The pronounced popping has now gone and the car seems to be running smoother.
I could check the mixture at my local garage.
Time will tell whether the hot starting problem has gone or if it would be beneficial to go closed loop?

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Re: High CO / Poor hot starting

Postby lotustonybassplayer » Thu 13.07.2017, 19:39

I have recently gone closed loop with a mountain chip, and i am getting at least 5 more mpg, and no longer do i get the smell of fumes as i drive along in the car nor do i smell of them either after a journey :D and only .5% co at mot time :wink:
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Re: High CO / Poor hot starting

Postby Steve A » Thu 13.07.2017, 20:37

lotustonybassplayer wrote:I have recently gone closed loop with a mountain chip, and i am getting at least 5 more mpg, and no longer do i get the smell of fumes as i drive along in the car nor do i smell of them either after a journey :D and only .5% co at mot time :wink:

That's good to know, my wife always say's my car sticks the house out when I put it in the garage :lol:
Where did you get all the parts numbers etc, wiki?
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Re: High CO / Poor hot starting

Postby lotustonybassplayer » Thu 13.07.2017, 22:47

Yep used the bosch sensor as listed on the wiki. got it from rockauto. I used loads of penetrating fluid over a couple of weeks before I attempted to remove the bung.
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Re: High CO / Poor hot starting

Postby Danny R » Thu 29.03.2018, 14:12

This all sounds remarkably like an issue I've been having. It's always had an intermittent misfire, I've changed the plugs, the previous owner had replaced the coil packs and leads but it still does it. I just shut it off, give it 10 minutes and it'd be alright next restart.
Recently, after a bit of a lay-up, when I start it the exhaust fumes stink, if you spend any time near it on tick-over you go back in the house stinking and there's still the misfire which now comes and goes during running. Seems to be alright when it's up to temperature though.
It's ready for the MOT now, sorting a few issues that'd prevent it passing (Hazard Warning lights, PAS pipe, sidelight bulbs etc) but I can't see it passing the emissions test like this.

Now I know where to start, good post!
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Re: High CO / Poor hot starting

Postby Steve A » Thu 29.03.2018, 15:25

"If everything is under control, you are going too slow."
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Re: High CO / Poor hot starting

Postby HJ2 » Thu 29.03.2018, 16:58

:clap:
If you always do what you always did, you always get what you always got
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