V6 Missfire

[apole]

Hi,

Not sure TBH, I just had a play with the computer when it was plugged in. There was quite a bit of info from various sensors. Sorry I can't be of more help here.

I can't see why it wouldn't be monitoring coolant temp however, it has the sensor.

Andy

[cheffy34]

Andy,

The heat sensor was disconnected by my local garage after they put new plugs in. The new plugs are apparently designed to run hotter to cope with the LPG temperatures. Prior to that it was running really rough and caused the cat to overtemp during a steep hill climb. I will disconnect the sensor again.
After the plugs and filters were changed the running improved 90%.

If the rain stops for more than 30 minutes then I will get to the distributor.
The west coast of Scotland is not a good place for bongos which dislike water!

Tim

If it turns out to be your gasket you can make a guard up from a 2ltr icecream container and gaffer tape to protect it from water ingress i'v only recently taken mine off actually, i also put small strips of gaffer tape all the way round the base of the dizzy cap where it joins the block as a temporary measure worked really well infact so well i nearly didn't bother with the gasket but my mate told me i was a tight arse, , long term lambda probs can also lead to the demise of your heat sensor, by constant overfuelling, aswell as a missfire. It sounds like yours was prob missfire tho by the way you say it was running really rough, If you say it running rough now and missfiring and you had plenty of rain (and i know what your rain is like i lived on the westcoast for 12 years and used to hol on the east) then i will bet you it damp dizzy due to no gasket and i will eat your boots if i'm wrong Does he run fine after a dry out overnight untill he feels the damp again when driving


Ofcourse usual part of siganture applies as i dont know what i'm talking about


Dar

[cheffy34]

ps

i could be wrong but i reckon the coolant temp is ecu read to control fueling when warming up


Dar

[apole]

The ECU is aware of the coolant temperature so along with this and other sensors it controls the fueling etc.

[bongoblue]

Hi Guys,
Thought you would like to know that the missfire is fixed at last. I got a performance car garage to check it over and they found a few things. There was some oil coming from the rocker cover into the plug wells. The plugs were in poor shape again so they got replaced.
The critical discovery came due to there being a consistent bit of coolant loss for the last 18 months. They pressure tested the system and then discovered that a small amount of coolant was being leaked onto the HT leads. This would explain why the problem only occured when the motor was fully warmed up.
The V6 is now running like a bird on both petrol and LPG.
Many thanks for all the help.
Tim

[mikeonb4c]

Hi Guys,
Thought you would like to know that the missfire is fixed at last. I got a performance car garage to check it over and they found a few things. There was some oil coming from the rocker cover into the plug wells. The plugs were in poor shape again so they got replaced.
The critical discovery came due to there being a consistent bit of coolant loss for the last 18 months. They pressure tested the system and then discovered that a small amount of coolant was being leaked onto the HT leads. This would explain why the problem only occured when the motor was fully warmed up.
The V6 is now running like a bird on both petrol and LPG.
Many thanks for all the help.
Tim

Great news

[missfixit70]

Glad you got it sorted, out of interest, where was the coolant leaking from?

[alans00ty5]

great news what a good response you peeps give,