Re: First Ever Query

TSwede · 12-18-2001, 04:30 PM

Hi...

I would like to introduce myself to this forum. My name is Tony and i am the purchaser of a lime freen 1975 2.7s Targa that previously belonged to Saffs.

I have my first ever question...

When the car is cruising (in any gear) at 2100 revs it bucks and judders - it doesn't do it if I accelerate or decelerate. Any advice truly appreciated as either the gearbox or my teeth will fall out if I don't sort this out.

Regards

T. Swede

rstoll · 12-18-2001, 04:35 PM

2000 revs is too low rpm for cruising. More like lugging. Keep it over 3000.

pwd72s · 12-18-2001, 04:36 PM

Did Anthony give you his E-mail address? He'd probably be more than willing to offer suggestions. Also, on this board, a little feature where you can e mail or send messages to those who post here. Just click on his profile icon. BTW, it was with a tear in his eye that he sold the car to you. May you have many happy miles. Best, Paul

makaio · 12-18-2001, 04:50 PM

Lime freen is a sweet colour! Just joking!

As Rstoll said 2000 rpm is too low for cruising, you should only be that low in the rev range when warming the motor up. 3000 is much better.

And welcome to the board!

Fishcop · Fishcop's Garage

You've been had mate! Tell him you want your money back

Not really , the others are right... keep up the rpm.

Enjoy

TSwede · 12-18-2001, 05:23 PM

Thanks all for the advice - I will experiment with my driving... although I might not have made myself too clear when i said cruising. I didn't mean that i drive round at 2100 revs but sometimes, in traffic it is unavoidable. The thing is that it never used to do it, I am a friend of Saffs and we discussed this when it started happening (not long after the car had been stood a while) so there is definitely something amiss. It is bloody difficult avoiding 2100 revs on the nail when trying to get through town.

Regards

Tony.

rstoll · 12-18-2001, 05:30 PM

If you are doing a lot of city commuting, may be time to head for the country and give it the reigns. Blow out the cobwebs.

JAE · 12-18-2001, 05:57 PM

Tony,
You'll get used to it. When unavoidable just try to always be slightly accelerating or decelerating and that will smooth out the bucking.

Joe

Adam · Adam's Garage

Tony,

I have to agree that it's better to keep it "on the boil" and up over 3,000rpm for best throttle response and smoothness, but my 2.7CIS car can lug around at low revs without this sort of effect. I'd say that there might be a small problem. Maybe an intake air leak if the car's been sitting for a while.

Good Luck and welcome to the 2.7 world! We'll need to get you involved in www.2point7.com

It'll be up and running soon.

TSwede · 12-19-2001, 09:09 AM

Hi all. I've been driving round more consistently at 3k today and it is more responsive etc. and definitely the way forward but as one of the posts noted there is definitely something amiss. In traffic the car satarted hopping about again (will 'lug around' fine at less than 2100 revs - quite torquey -) but at bang on 2100 off it goes. The gentle accellerating and decelerating helps but it isn't really safe.... some old bat in a mini could end up copping for it the way they drive around here. Any further suggestions as to the problem would be good as it gives me a few solutions to try... I will keep checking the board. I have other issues I would like to discuss but I'd like to sort this first. Also thanks for all the welomes and kind regards...

T Swede

MBlake · 12-19-2001, 09:20 AM

Does this mean Saffs went for the Early Targa in the US then??

Tony,
Welcome! At least there shouldn't be much chance of someone running into you and claiming "sorry mate, didn't see you" with that car! Cool colour.

TSwede · 12-19-2001, 09:29 AM

Yes, he has gone for the US Targa... I think he completed the deal earlier this week, I'm looking forward to seeing it. As for the colour of mine - well, some people hate it - but what do they know... the funkiest thing they've ever done is park next to it!

Best Regards

Thomas Owen · 12-19-2001, 11:00 AM

Does the bucking seem to be coming up through the drive train? If so, I would say keep the revs up, but it sounds like you have either an ignition problem or fuel problem at that rpm. This would be more likely the case since you state it has started since the car was parked for some time.
The best suggestion yet may be the 'open road and let the reins out'. You may have a weak plug or carbon buildup - perhaps Early-S-Man will post a suggestion soon.
Good luck

BTW- what does 'some old bat in a mini could end up copping for it the way they drive around here' mean?

TSwede · 12-19-2001, 11:52 AM

Please excuse the colloquialisms, I sometimes forget how global we all are these days. I shall translate...

'It is highly likely that an elderly person ['old bat' - especially if female - male is 'old bastard'] driving very slowly (and possibly unpredictably) in something small like an Austin Mini (or Rover Metro) might become seriously injured or worse ['cop for it'] owing to the fact that I am less able to control my car as effectively when deliberately avoiding a particular rev range and the fact that cars and drivers of this nature frequently get in the way as it is....'

Hope this helps... if anyone is planning to come to the UK and wants any grammatical tips - I will do my best.

Best Regards... and thanks for the help...

ps.

This sounds like the kind of job I should go to the fuel injection specialists for (£50 an hour probably) unless anyone has any diagnostic tips;

MRM · 12-19-2001, 11:57 AM

Sounds like a vacuum leak somewhere. My 84 cab has done the same thing twice. Most recently it turned out to be a rotted gasket on the intake manifold causing the vacuum leak. At first I thought my problem was just lugging at too low an RPM. I concentrated hard on always keeping a slight acceleration or deceleration going too, and it worked for a while. But if you pay attention you can tell the chugging is different than just lugging under low RPMs. My car was sitting for a while too, which probably helped set up the leaks.

TSwede · 12-19-2001, 12:01 PM

Thanks.... This sounds promising. I will find anything that looks like a rubber pipe at the weekend and take a good look at it. Do you have any diagnostic tips?

BTW

The car had the heads rebuilt - new guides etc. just before it was laid up so it is unlikely to be carbon etc. I also assume it had new gaskets.