Page:
Home > Help Needed / General Tech Chat > vac to boost transistion mis-fire

AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

18th Apr, 2005 at 10:09:46pm

Bearing in mind I have only just picked up the car...

Whats the typical cause of a miss fire than comes on just as you move between vac and boost...?

The car is running very rich all the time, you can smell/see and the lambda guage says so! But... as soon as it comes on boost the miss has gone and it flys (really flys!).

T-piece trick?

Alex

AlexF

turbodave16v
Forum Mod

10980 Posts
Member #: 17
***16***

SouthPark, Colorado

18th Apr, 2005 at 10:22:58pm

Is there any oil in the dashpot?

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

18th Apr, 2005 at 10:28:24pm

LOL!

Good point, talk about ignoring the obvious! Not checked, then again I've only driven it twice.. and once was getting it home :)

So far I've only checked the oil.

What dash pot oil do you use Dave? I've always gone for engine oil (20w50).

Alex

AlexF

turbodave16v
Forum Mod

10980 Posts
Member #: 17
***16***

SouthPark, Colorado

18th Apr, 2005 at 10:53:53pm

Heavier the better. I stopped using Valvoline 20/50 in my engine, but retained the 1/4 gallon I had left for the dashpot - it's a really heavy, almost treacle like goop!

Now I'm having problems finding anything other than Valvoline... *frown*

Edited by turbodave16v on 18th Apr, 2005.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



Jimster
Site Admin

User Avatar

9408 Posts
Member #: 58
455bhp per ton
12 sec 1/4 mile road legal mini

Sunny Bridgend, South Wales

19th Apr, 2005 at 09:24:23am

whats wrong with valvoline dave?

Team Racing

On 15th May, 2009 TurboDave said:
I think the welsh one has it right!


1st to provide running proof
of turbo twinkie in a car and first to
run a 1/4 in one!!

Is your data backed up?? one extra month free for all Turbo minis members, PM me for detials

colas

567 Posts
Member #: 102
Post Whore

Pennsylvania USA

19th Apr, 2005 at 09:58:57am

i use castrol GTX 20/50.


AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

19th Apr, 2005 at 10:21:50am

What about using ep90 in there ?

Alex

AlexF

jukka

302 Posts
Member #: 60
Forgotten more than most ever know

19th Apr, 2005 at 12:32:00pm

The famous oddball hose between the carb flange and RH side of the carb still connected ??

AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

19th Apr, 2005 at 12:45:33pm

yes it is... not the original one thou...

The extra connection (as in the float chamber pressure link) is blocked off at the moment...

AlexF

jukka

302 Posts
Member #: 60
Forgotten more than most ever know

19th Apr, 2005 at 03:11:33pm

Try blocking that hose completely. It does odd things to mixtures. Blocking the hose richens the mid range mixture and usually helps hesitation. Don´t know if it helps in your case but try it anyway.

AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

19th Apr, 2005 at 03:49:39pm

If I try the T-peiece trick will it lean the mid range?

Alex

AlexF

turbodave16v
Forum Mod

10980 Posts
Member #: 17
***16***

SouthPark, Colorado

19th Apr, 2005 at 03:56:42pm

Do as Jukka says, block the pipe with mole-grips or similar then take it for a spin.
Tee piece trick is for when it won't run on boost; Yours does.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



turbo hogster

1641 Posts
Member #: 178
Post Whore

stowmaket suffolk

19th Apr, 2005 at 07:07:19pm

i use neat stp oil treatment its thick as f@ck but works well and you dont hAVE TO TOP IT UP EVERY DAY.

always looking for them bigger bunches of bannanas

Nic

User Avatar

9327 Posts
Member #: 59
First mini turbo to get in the 12's & site perv

Herefordshire

20th Apr, 2005 at 08:12:22pm

i thought it had just been on the rollers?

AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

20th Apr, 2005 at 09:42:30pm

It has...

Power run on a charity RR shoot out...

Not quite the same thing as a setup!

The problem is since its last setup the acatuator and a few other things have been changed... so its def overfueling for a start!

Alex

AlexF
Home > Help Needed / General Tech Chat > vac to boost transistion mis-fire
Users viewing this thread: none. (+ 1 Guests)  
To post messages you must be logged in!
Username: Password:
Page: