Missfire *FIXED*

[S666UKH]

I have just had a VTS engine put in my vtr by Ricky rpm.

My finds it hard to start when warm, it sounds like a miss fire.

I have changed the spark plugs,coil pack, temp sensor, cleaned tb and used injecter cleaner.

Problem still there.



Engine stalls when trying to restart after warm, think could be a fuel problem

[pepsimax]

check the compression, few drops of 10w40 down the empty plug holes???

[S666UKH]

Dats all fine...it only happens when hot.

[S666UKH]

Changed fuel filter
Plugs again
Cleaned again and all Tb sensors
Icv


It's not da fuel pump or the reley

Problem still stands

[stevo67]

Was the replacement coil pack a new 1 or used 1?

[S666UKH]

It was used....but it works fine. Even with my old one in it did the same thing.

[S666UKH]

I got a spare fuel pump so I am gonna try that today.

I noticed the fuel pump does not prime some times

[stevo67]

I got a spare fuel pump so I am gonna try that today.

I noticed the fuel pump does not prime some times

Change the fuel pump relay & check for breaks in the engine loom & the engine earths.:y:

[S666UKH]

Just changed the fuel pump no luck. :(

[saxovtsmad]

id take it back to where you had it done mate

[S666UKH]

I am trying Ricky rpm is not answering his phone.

Changed the reley now no difference

[S666UKH]

I just spent all day checking the loom and earth points.

Cleaned up the earth points and Dissconneted the batt for the ecu to reset.
No luck
Heres sun more info


The car start fine when cold, It work all fine I will drive it for a 30mins down to my mates by then the engine is hot. When I turn the car off and start lyk 3mins later it starts to misfire....I have to keep starting it again again until it runs normal.

Plz sum one help

[stevo67]

What`s the coolant like ie can you smell petrol fumes?I`m thinking maybe an outside chance of a HG on the way out.When it gets hot it starts to lose compression,as said take it back to the guy who fitted it for you.

[saxovtsmad]

like i said take it back

[S666UKH]

Steve it only happens on start up not all the time just sum times.

I smell fumes on the outside only because only because it it's a decat


Here more info


2nd coilpack
New spark plugs
Cleaned tb and tb sensors
Checked O2 sensors
Fuel reley
Fuel pump
Crank sensor
Checked earths and loom

It can't be compression because its runs fine when cold and hot it only happens on start up.



Gonna check ecu next.

[S666UKH]

like i said take it back


I am trying but he don't answer...

[saxovtsmad]

I am trying but he don't answer...

just turn up at his works and say fix it oh and i need a courtesy car or trading standards wlll be involved

[S666UKH]

Rickys a nice Guy but I don't understand y he would not answer plus he lives 190 miles away from me :(

I am still gonna try.

[saxo_kid18]

pm me your number and al get him to ring you m8 am popin down tomorrow for a rew bits hes literaly 1mile down road from me m8 i no evri time i pop down hes flat out with wrk

[S666UKH]

I think I sorted it

I changed all the things above, with a 2nd coilpack.

I put my old one back in today and it worked when cold/hot, it even started up frist time all the time.

Going drive it around abit more to see if it has really worked, not going to get to happy lol.

[S666UKH]

Aaahhh Mann


It came bk noooooo.

It worked fine for a hour and half start and stop and randomly it came bk.

[S666UKH]

Just got the ecu in the post, changed it over next gonna drive around for a bit to make sure the problem is still not there.

Hope it works!!

[lostzy]

fingers crossed buddie

[S666UKH]

fingers crossed buddie

Cheers man :)

[S666UKH]

i think the ecu fixed it.......

i been driving for 2 hours.

started the engine like 6 times - no missfire
started when cold and hot - no missfire

not going to get 2 happy it come back. lol

[lostzy]

nice 1 mate , i think my probs the ecu tbh

[S666UKH]

it might be....u gotta find someone that lives near you with a vts.

just dont give up

[S666UKH]

Turned out be my ecu...Rickyp rpm said my ecu was not reading the coolant temp sensor as it was meant to. That explains why my temp was always high and take took so long long to warm up.

So it fixed after all that lol

[tingaling]

At least its sorted now though :)

[stevo67]

Turned out be my ecu...Rickyp rpm said my ecu was not reading the coolant temp sensor as it was meant to. That explains why my temp was always high and take took so long long to warm up.

So it fixed after all that lol

You got there in the end mate,it`s always a big relief to know it`s running right,now go & enjoy it.:drink:

[S666UKH]

You got there in the end mate,it`s always a big relief to know it`s running right,now go & enjoy it.:drink:

Lol its one problem after the other.

Just at Halfords getting loctite silicone for the rocker.