Just spent an absolute fortune on engine mounts, drop links, bushes, exhaust and service and thought the spending had finished, unfortunatly 2 problems have remained, 1sr one is suspension related and will post that on the relevent board, the second one is lumpy running, although lumpy is too strong a word as It's barely noticable. It runs fine until the oil temp goes up and then there's a very faint stutter, you realy only notice it on tick over or when at a steady speed, under acceleration you cant feel anything.
Can anyone spread any light on ths or point me in the right direction to check it out.
Cheers
Dan
lumpy running
Moderator: Moderators
lumpy running
'01' black 406 exec saloon
'90' red Lancia Delta Integrale
'02' MG ZT estate
'90' red Lancia Delta Integrale
'02' MG ZT estate
- steve_earwig
- Moderator
- Posts: 19813
- Joined: Thu Oct 04, 2007 6:09 pm
- Location: Jastrebarsko, Croatia http://www.jastrebarsko.hr/lokacija/
Re: lumpy running
2001 2.0 petrol.
I'm a bit lost if it hasn't got a carb but I'm going to suggest an ignition fault - I guess plugs or coil pack is all they get. Did you change the plugs?
Edit - scratch that, I just spotted this in your other thread:
Have a search (or wait for Dai) - I gotta go to the quack's again

I'm a bit lost if it hasn't got a carb but I'm going to suggest an ignition fault - I guess plugs or coil pack is all they get. Did you change the plugs?
Edit - scratch that, I just spotted this in your other thread:
You could do with putting that in your sig as it's quite a different lump. I think they all experience a misfire, something to do with the coil pack and needing some special conductive (or was it non-conductive?) heat paste. Or somethingDan224 wrote:hi, it's a 2ltr hpi

Have a search (or wait for Dai) - I gotta go to the quack's again


Unskilled meddling sin©e 2007
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- Welly
- The moderator formally known as Welton
- Posts: 15033
- Joined: Tue Jan 10, 2006 12:52 pm
- Location: East Midlandfordshire
Re: lumpy running
Try running with Super Unleaded you'll be amazed the difference it makes.
If not then I'm thinking a proper injector clean (taken out and cleaned/tested on a rig) an expert on this told me that petrol injectors should be cleaned every 40,000 miles
If not then I'm thinking a proper injector clean (taken out and cleaned/tested on a rig) an expert on this told me that petrol injectors should be cleaned every 40,000 miles

Cars in my care:
2021 Kia Spottage 1.6 Pez Turbo Dual Clutch Gearbox Trickery
2013 Renner Twingo - donkey work
2021 Kia Spottage 1.6 Pez Turbo Dual Clutch Gearbox Trickery
2013 Renner Twingo - donkey work
Re: lumpy running
cheers guys, sods law though Welly, just put £60 in this morning and the way this Pug's eating into my savings I cant afford to waste it
How about something like redex or similar?

'01' black 406 exec saloon
'90' red Lancia Delta Integrale
'02' MG ZT estate
'90' red Lancia Delta Integrale
'02' MG ZT estate
Re: lumpy running
Might be a long way off but my 2.1 dt was a little lumpy on tic over and it was down to the pin sensor on the injector not sure if urs will have the same
2.1 glx p reg d9 half leather electric seats d9 centre console leather steering wheel front lag splitter de badged front end strut brace all grey bits of interior is now black
Things to do finish off fitting leather door cards,coil overs,window tint, fit wolfrace wheels with 20 mm spacers 225.45.17 and the list will continue
Things to do finish off fitting leather door cards,coil overs,window tint, fit wolfrace wheels with 20 mm spacers 225.45.17 and the list will continue
Re: lumpy running
not sure mate, I'll have to ask some of our more knwoledgable senior members, because the only thing electrical I'm good at is being electrocuted. 

'01' black 406 exec saloon
'90' red Lancia Delta Integrale
'02' MG ZT estate
'90' red Lancia Delta Integrale
'02' MG ZT estate
Re: lumpy running
Same here
I only found out it was that on mine coz I had it hooked up to a computer

2.1 glx p reg d9 half leather electric seats d9 centre console leather steering wheel front lag splitter de badged front end strut brace all grey bits of interior is now black
Things to do finish off fitting leather door cards,coil overs,window tint, fit wolfrace wheels with 20 mm spacers 225.45.17 and the list will continue
Things to do finish off fitting leather door cards,coil overs,window tint, fit wolfrace wheels with 20 mm spacers 225.45.17 and the list will continue
Re: lumpy running
just a thought, I got my spark plugs from halfrauds, checked the website and it says its for an RFV engine, however, if L'm reading my Vin right, I've got an RFN engine, could this be a cause of the problem do you think?
'01' black 406 exec saloon
'90' red Lancia Delta Integrale
'02' MG ZT estate
'90' red Lancia Delta Integrale
'02' MG ZT estate
Re: lumpy running
Get a Another set but with the right code see if it solves it worth ago
2.1 glx p reg d9 half leather electric seats d9 centre console leather steering wheel front lag splitter de badged front end strut brace all grey bits of interior is now black
Things to do finish off fitting leather door cards,coil overs,window tint, fit wolfrace wheels with 20 mm spacers 225.45.17 and the list will continue
Things to do finish off fitting leather door cards,coil overs,window tint, fit wolfrace wheels with 20 mm spacers 225.45.17 and the list will continue