Search found 10 matches

by Dave.Sellers
Sat Jun 18, 2016 11:55 am
Forum: Mechanical
Topic: Engine suddenly 'racing' all on its own!
Replies: 16
Views: 3260

Re: Engine suddenly 'racing' all on its own!

I took the top off the carb, checked the needle wasn't bent, took it out cleaned and replaced it. Cleaned everything else and put it back together. Backed off tick over adjustment as far as it would go and all now seems well. Disappointing to not really find a concrete cause but seems fine. Thanks a...
by Dave.Sellers
Sat Jun 18, 2016 8:52 am
Forum: Mechanical
Topic: Engine suddenly 'racing' all on its own!
Replies: 16
Views: 3260

Re: Engine suddenly 'racing' all on its own!

Well, loosened the cable right off and manually checked that the throttle 'lever' was sprung back as far as it would go. Started the engine and it's still racing. I don't want to wake the whole street later so will wait a while before digging deeper. Somebody suggested an air leak might where would ...
by Dave.Sellers
Fri Jun 17, 2016 3:59 pm
Forum: Mechanical
Topic: Engine suddenly 'racing' all on its own!
Replies: 16
Views: 3260

Re: Engine suddenly 'racing' all on its own!

Thanks all.

The spring seems OK, i.e. if I blip the throttle manually with my finger at the carb, it springs back.

Cable too tight sounds favourite, when the rain thunder and lightning stops I'll go and take look. If it is that, what a proper Charlie I will feel :oops:

Watch this space...
by Dave.Sellers
Fri Jun 17, 2016 3:12 pm
Forum: Mechanical
Topic: Engine suddenly 'racing' all on its own!
Replies: 16
Views: 3260

Engine suddenly 'racing' all on its own!

My Traveller has a 1275 with a HIF44. I have noticed recently that it was ticking over abnormally high and just made a mental note to adjust it next time I had the bonnet open. Driving home yesterday, when I dipped the clutch to change gear the engine was racing as though I'd left my foot on the gas...
by Dave.Sellers
Thu Sep 10, 2015 8:58 am
Forum: Mechanical
Topic: pre-ignition with richer mixture
Replies: 14
Views: 3137

Re: pre-ignition with richer mixture

Thanks all.

I think I'll have the carb off, give it a good clean, refill with the 'official' SU damper oil and upgrade to K&N cone and carry on fiddling...

Cheers
by Dave.Sellers
Wed Sep 09, 2015 6:53 pm
Forum: Mechanical
Topic: pre-ignition with richer mixture
Replies: 14
Views: 3137

Re: pre-ignition with richer mixture

OK, I whipped the bell off this evening. From what I'd seen on the web I was expecting to then lift off the spring then withdraw the piston but the piston came off with the bell. All looked pretty grubby in there but the piston slides up and down smoothly enough, will get some carb cleaner and give ...
by Dave.Sellers
Wed Sep 09, 2015 11:39 am
Forum: Mechanical
Topic: pre-ignition with richer mixture
Replies: 14
Views: 3137

Re: pre-ignition with richer mixture

Thanks so much for this, I will do a lot more reading and then get my hands properly dirty! Looking here: http://www.theminiforum.co.uk/forums/topic/110729-what-carb-do-i-have/ it seems I do have a HIF but whether 44 or other size I don't know. Looks like I have to take the carb off the engine and m...
by Dave.Sellers
Wed Sep 09, 2015 8:59 am
Forum: Mechanical
Topic: pre-ignition with richer mixture
Replies: 14
Views: 3137

Re: pre-ignition with richer mixture

OK, I'll look into changing the needle. I don't really understand the multitude of needles and how a 'fixed needle no.6' compares to a BDL but looking at this chart: http://www.7ent.com/pages/su-needle-chart-pg-87.html suggests that the 6 or even the H6 are way up the rich end of the scale compared ...
by Dave.Sellers
Tue Sep 08, 2015 6:28 pm
Forum: Mechanical
Topic: pre-ignition with richer mixture
Replies: 14
Views: 3137

Re: pre-ignition with richer mixture

Correct, the head was from Vulcan engineering (£138 + VAT in 1990). The cam looks like it might be a standard MG Metro cam (see: http://www.pistonheads.com/GASSING/topic.asp?h=0&t=1283357&mid=0&nmt=Cam+choice+query), part number CAM 6648, £86 in 1990 Thanks for the clarification of the t...
by Dave.Sellers
Tue Sep 08, 2015 3:37 pm
Forum: Mechanical
Topic: pre-ignition with richer mixture
Replies: 14
Views: 3137

pre-ignition with richer mixture

Hi Apologies up front for the rambling post... I recently purchased a '68 Traveller. When I test drove it it was pinking a little, I asked the owner to have his local garage adjust the timing and look at the brakes as they pulled to one side. That was all sorted and I drove it back from West Somerse...