car running awful
Discussion
Between 1-3500 rpm the car is running terribly--had the 12000 mile service in April--since then no worries but all of a sudden its dreadful--seems to lack power then it kicks in and everythings fine but at the lower end its running like a bag of sh1te. Any ideas--also its pinking more than usual. I know nil about engines but if I were to guess I'd say the spark plugs were dirty--sound reasonable??
What kind of mileage has the car got, and is the rough running occurring throughout the range you stated - or worse at some revs than others.
Plugs and leads are a good starting point, but personally I'd run the car to an independent to have them checked out - its less of a DIY job compared to the vast majority of cars.
The other potential area is the throttle pots requiring a rebalance - again, best left to a professional. They can go out of tune leading the ECU guessing at to what it should be doing concerning air/fuel mixture - and not quite getting it right. In my experience this is most bothersome at around 1800-2500 rpm. Above and below that, the throttle must be too far closed, or too wide open for it to be an issue. Mine were rebalanced for £40 and a new set of leads for £60 - and its been much much better since. I'm not convinced that TVR checkes this when my car had its 18K service (at 16K).
Incidentally, earlier Tuscans ran rather inferior ignition leads so it is worth checking them and maybe look to getting some new ones of a later spec?
Plugs and leads are a good starting point, but personally I'd run the car to an independent to have them checked out - its less of a DIY job compared to the vast majority of cars.
The other potential area is the throttle pots requiring a rebalance - again, best left to a professional. They can go out of tune leading the ECU guessing at to what it should be doing concerning air/fuel mixture - and not quite getting it right. In my experience this is most bothersome at around 1800-2500 rpm. Above and below that, the throttle must be too far closed, or too wide open for it to be an issue. Mine were rebalanced for £40 and a new set of leads for £60 - and its been much much better since. I'm not convinced that TVR checkes this when my car had its 18K service (at 16K).
Incidentally, earlier Tuscans ran rather inferior ignition leads so it is worth checking them and maybe look to getting some new ones of a later spec?
TUS 373 said:
Incidentally, earlier Tuscans ran rather inferior ignition leads so it is worth checking them and maybe look to getting some new ones of a later spec?
Or change them for a set of Magnicore leads
www.actproducts.co.uk/ignition.php
Nick
scotty2dogs said:
Between 1-3500 rpm the car is running terribly--had the 12000 mile service in April--since then no worries but all of a sudden its dreadful--seems to lack power then it kicks in and everythings fine but at the lower end its running like a bag of sh1te. Any ideas--also its pinking more than usual. I know nil about engines but if I were to guess I'd say the spark plugs were dirty--sound reasonable??
It should not pink at all. Has this occured after you washed the car or has it been in the rain ?
I would book it in for a check over. Mine goes in at least every 2000 miles for a tweek, I could of course not bother and leave it until the next service like some owners would do, but I am fussy and would rather it ran properly.
Hope you get it sorted cheaply.
Cheers
Whitey
I would say spark plugs my griff used to do this every time i got stuck in traffic for a long time.If the plugs are NGK they will not clean up you have to replace them.Also make sure the gaps are spot on it is critical.
I know of two really good independants in Kent
Progress engineering in maidstone speak to simon he is a engine god and they have rolling road.
Chris Bailley (formaly Arckell's) very good
now in canterbury
If you need there numbers email me via my profile
Hope you get it sorted Lee
I know of two really good independants in Kent
Progress engineering in maidstone speak to simon he is a engine god and they have rolling road.
Chris Bailley (formaly Arckell's) very good
now in canterbury
If you need there numbers email me via my profile
Hope you get it sorted Lee
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