Lumpy engine.... Firing on all 5

Renault & Alpine General Discussion

Moderators: eastlmark, BIG_MVS, phildini, Test Moderator, Alpineandy

User avatar
User

simontaylor

Rank

Non Member

Posts

5602

Joined

Thu Apr 15, 2004 12:33 pm

Location

Fleet, Hampshire


Has thanked: 44 times
Been thanked: 56 times

Lumpy engine.... Firing on all 5

Postby simontaylor » Wed Mar 28, 2007 10:46 pm

Only on an Alpine....
Since putting the engine back in the car, it seems VERY lumpy on idle, like it is only firing on 5 cylinders.
I have removed, examined and cleaned the plugs and checked that all the HT leads are firmly clipped into place.
While the car is running, I have disconnected the HT leads in turn and 4 cause the car to idle worse and 2 make no difference at all (the front 2 cylinders by coincidence). I have inserted a plug into the suspect HT lead from a front cylinder and there were loads of spaks.
Oh yes, I have checked the earth, twice now.

Any suggestions?
1986 : '86 GTA v6 BW-EFR turbo, with Adaptronic ECU
Firsts at
2007 : Gurston Down & RAOC Champion
2008 : Rushmoor & Eelmoor & ACSMC Hillclimb class Champion
2009 : Longcross & Eelmoor
2010 : Crystal Palace & Eelmoor
2016 : Rushmoor & 5th O/A
User avatar
User

Stunned Monkey

Rank

Non Member

Posts

1514

Joined

Tue Apr 12, 2005 12:24 am

Location

Nr Chippenham, Wiltshire


Has thanked: 0 time
Been thanked: 3 times

Postby Stunned Monkey » Wed Mar 28, 2007 11:15 pm

On the two that make no difference, have you got the two leads backwards?

Simple stuff first :D
Martin - PRV Tinkerererer
www.delorean.co.uk
User avatar
User

simontaylor

Rank

Non Member

Posts

5602

Joined

Thu Apr 15, 2004 12:33 pm

Location

Fleet, Hampshire


Has thanked: 44 times
Been thanked: 56 times

Postby simontaylor » Thu Mar 29, 2007 12:41 am

Good point, I'll check that at first light tomorrow.
I did replece the dizzy cap while the engine was out, however I did also mark up and number the leads 1-7 from L-R before I removed them, but I will still double check.
1986 : '86 GTA v6 BW-EFR turbo, with Adaptronic ECU
Firsts at
2007 : Gurston Down & RAOC Champion
2008 : Rushmoor & Eelmoor & ACSMC Hillclimb class Champion
2009 : Longcross & Eelmoor
2010 : Crystal Palace & Eelmoor
2016 : Rushmoor & 5th O/A
User avatar
User

Stunned Monkey

Rank

Non Member

Posts

1514

Joined

Tue Apr 12, 2005 12:24 am

Location

Nr Chippenham, Wiltshire


Has thanked: 0 time
Been thanked: 3 times

Postby Stunned Monkey » Thu Mar 29, 2007 1:05 am

I know you have a bit of a blind spot for Left and Right :lol: :lol: :lol:
Martin - PRV Tinkerererer
www.delorean.co.uk
User avatar
User

simontaylor

Rank

Non Member

Posts

5602

Joined

Thu Apr 15, 2004 12:33 pm

Location

Fleet, Hampshire


Has thanked: 44 times
Been thanked: 56 times

Postby simontaylor » Thu Mar 29, 2007 9:43 am

More than 1 blind spot Martin, I seem to have a dys-lex-lic temdancy, now I don't even seem to be able to count up to 7.
Feking lectrics !
Whoos :oops: , the dizzy leads for cylinders 1 & 4 were the wrong way round, Now I'm purring on all 6 pots, well smooth.
Amazing how it started so well on just 4 pots though.

Cheers :D I'll be racing this weekend, so long as I get an MOT this afternoon :shock:
1986 : '86 GTA v6 BW-EFR turbo, with Adaptronic ECU
Firsts at
2007 : Gurston Down & RAOC Champion
2008 : Rushmoor & Eelmoor & ACSMC Hillclimb class Champion
2009 : Longcross & Eelmoor
2010 : Crystal Palace & Eelmoor
2016 : Rushmoor & 5th O/A
User avatar
User

andyh877

Rank

Non Member

Posts

3709

Joined

Mon Apr 18, 2005 7:11 am

Location

Alpine France


Has thanked: 1 time
Been thanked: 5 times

Postby andyh877 » Thu Mar 29, 2007 9:55 am

simontaylor wrote:More than 1 blind spot Martin, I seem to have a dys-lex-lic temdancy, now I don't even seem to be able to count up to 7.
Feking lectrics !
Whoos :oops: , the dizzy leads for cylinders 1 & 4 were the wrong way round, Now I'm purring on all 6 pots, well smooth.
Amazing how it started so well on just 4 pots though.

Cheers :D I'll be racing this weekend, so long as I get an MOT this afternoon :shock:


good luck mate keep it on the black stuff :!:
User avatar
User

David Gentleman

Rank

Non Member

Posts

3474

Joined

Thu Apr 15, 2004 8:10 am

Location

Colchester, Essex


Has thanked: 0 time
Been thanked: 0 time

Postby David Gentleman » Fri Mar 30, 2007 9:53 am

simontaylor wrote:More than 1 blind spot Martin, I seem to have a dys-lex-lic temdancy, now I don't even seem to be able to count up to 7.
Feking lectrics !
Whoos :oops: , the dizzy leads for cylinders 1 & 4 were the wrong way round, Now I'm purring on all 6 pots, well smooth.
Amazing how it started so well on just 4 pots though.

Cheers :D I'll be racing this weekend, so long as I get an MOT this afternoon :shock:


lol, youll be surprised, they can still chug along on 3, and drive..
Image
no avatar
User

scottydog

Rank

Non Member

Posts

151

Joined

Mon Sep 25, 2006 7:35 pm

Location

Bedfordshire.


Has thanked: 0 time
Been thanked: 0 time

Postby scottydog » Fri Mar 30, 2007 9:24 pm

They don't actually need all the spark plugs either as I found out when one undid itself and blew out of the engine at dead on the legal motorway limit of 70mph :wink: , breaking the HT lead. She kept running - quite smoothly as well. The noise was a bit of a giveaway though!

At that moment I thought my nice shiny new GTA that I'd only had for three weeks had gone bang big time - it made a hell of a noise! I had that unpleasant sinking feeling :cry: I can't tell you how relieved I was when I opened the engine cover.

Very wierd - never had this before on any car. I just put the plug back - bodged the lead back together to get home - nice shiny new set of leads and it's been perfect since.


  • Advertisement

Who is online

Users browsing this forum: Bing [Bot] and 184 guests

Powered by phpBB ® | Renault' and 'Alpine' are trademarks of Renault S.A.S. or its subsidiaries and are used with kind permission of Renault France