adam73bgt
Club Retro Rides Member
Posts: 4,869
Club RR Member Number: 58
|
Cold Starting Fail..adam73bgt
@adam73bgt
Club Retro Rides Member 58
|
Dec 10, 2012 18:30:34 GMT
|
Something i just thought of, could the fact that my car has a non-ballast ignition coil be hampering the starting too with the 6v batteries fitted?
ChasR did your B's have ballast coils do you know?
|
|
|
|
|
|
|
Dec 10, 2012 21:16:22 GMT
|
Something I just thought of, could the fact that my car has a non-ballast ignition coil be hampering the starting too with the 6v batteries fitted? ChasR did your B's have ballast coils do you know? Yes ;D As I understand it, ballast resisted ignition is supposed to give you a full spark with lower voltage... Hence, when you take out the ballast resistance gubbins you need more voltage for the same result... hence the 6v batteries don't have the juice to start from cold.... especially if you still have the ballast gubbin's fitted to a non-ballast coil, I don't think would be a good arrangement...
|
|
|
|
adam73bgt
Club Retro Rides Member
Posts: 4,869
Club RR Member Number: 58
|
Cold Starting Fail..adam73bgt
@adam73bgt
Club Retro Rides Member 58
|
Dec 10, 2012 23:38:38 GMT
|
Mmmm i thought it might have had an effect, but my car was built before they brought the ballast ignition in on the B's so theres no ballast stuff on the car I thought i'd dodged a bullet by not having the ballast system as id read stories of it setting fire to electrics due to the resistance for the ballast being created from a long piece of wire at the front of the car rather than just one resistor
|
|
|
|
|
|
Dec 14, 2012 13:52:58 GMT
|
hmmm... if you never had Ballast resistance then you can knock that right out of the equation... The coil will work as well as the batteries allow it to... How is the rest of the issues going? got to the bottom of it yet? There are quite a lot of suggestions here and it would be good to know what you have tried so far and if it has made an improvement........
|
|
|
|
adam73bgt
Club Retro Rides Member
Posts: 4,869
Club RR Member Number: 58
|
Cold Starting Fail..adam73bgt
@adam73bgt
Club Retro Rides Member 58
|
|
well its been the last week of term for me at uni, so ive had very little time to do anything on the car :/ still managing to use it though, first with the jump starter and then recently with the slightly milder weather its actually been able to start under its own power.
curiously when starting, 'pumping' or moving the choke in and out quickly seemed to get the car started quicker... so I'm pretty certain that i need to spend some time looking at ALL the carb linkages and the cables.
but now uni work is done for a bit, ill get cracking on with the car, hopefully i should get the new battery in over the weekend, then ill have a look at the carb linkages, i want to get the timing checked again as I'm not convinced its bang on, and the tappets are a bit noisy, so the to do list is pretty lengthy still
|
|
|
|
andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,165
|
|
|
Possibly the best SU carb "walk through" here. www.mgexperience.net/article/su-tune.htmlGood luck and I've always found that a lollipop stick with a scale on it's side and pushed into where the damper piston sits, provide a accurate measure against the top of the carb, this helps with balancing, when both sticks are the same height, the carbs are balanced.
|
|
|
|
ChasR
RR Helper
motivation
Posts: 10,195
Club RR Member Number: 170
|
Cold Starting Fail..ChasR
@chasr
Club Retro Rides Member 170
|
Dec 15, 2012 18:48:48 GMT
|
IIRC my chrome bumper B did not have a ballast (but I never really checked on that car!) but my '79 most definately did!
I can now balance them fairly well by ear, although it has taken me a while to acquire the knack! I do have a carbalancer you can borrow if you need to use it.
|
|
|
|
adam73bgt
Club Retro Rides Member
Posts: 4,869
Club RR Member Number: 58
|
Cold Starting Fail..adam73bgt
@adam73bgt
Club Retro Rides Member 58
|
Dec 17, 2012 20:12:13 GMT
|
ah fair enough, it was a long shot anyway tbh i think it will start fine with the new battery I may PM you in the new year for some advice when it comes to setting everything up though, as ill be heading back to ipswich for xmas soon
|
|
|
|
adam73bgt
Club Retro Rides Member
Posts: 4,869
Club RR Member Number: 58
|
Cold Starting Fail..adam73bgt
@adam73bgt
Club Retro Rides Member 58
|
Dec 18, 2012 22:29:28 GMT
|
small upate, new 12v battery with beefier CCA has solved the cold starting issue, still think carb linkages need a good look at, will probably do that while I'm home for christmas in the meantime, ive noticed that I appear to have oil leaking down the side of the rocker cover from the filler cap, and theres what appears to be oil leaking from the top of the dashpots also I'm gonna google it anyway, but any clues as to what could be causing this? I thought blocked breather initially, but I replaced the breather hoses only a couple of months ago, unless the metal breather pipe from the block is clogged?..
|
|
Last Edit: Dec 18, 2012 22:31:44 GMT by adam73bgt
|
|
|
|
|
If the oil is definitely coming out of the top of the dashpots it means they are over-filled and the oil is pumping out when the dashpot moves... Strange that it has randomly started happening - unless the dashpot is moving further up than it has in the past - does the car feel much faster with the new battery? has your associated fiddling managed to improve the throttle linkage somehow?? Otherwise, has anything else changed with the car as you noticed the oil leaks appearing??
|
|
|
|
|
adam73bgt
Club Retro Rides Member
Posts: 4,869
Club RR Member Number: 58
|
Cold Starting Fail..adam73bgt
@adam73bgt
Club Retro Rides Member 58
|
Dec 28, 2012 22:15:57 GMT
|
Mmm i cant remember when i first noticed it but i filled them up to where i thought was the right point not too long ago so i must have just overdone it a bit, the fact that there appears to be the same thing happening from the oil filler cap on the rocker cover worries me a little more :/ as the engine oil hasnt been over the max line on the dipstick.. The car doesnt feel much different on the move with the new battery tbh, possibly a bit easier to drive from cold but that'll be in part down to my improved use of the choke while warming up the weather has been awful here so ive not had a chance to look at the linkages properly annoyingly, i might get a chance this weekend fingers crossed. And i cant say that anything else has changed really, oil pressure is good, it did get a bit warmer than usual while i was in a queue of traffic the other day. the needle went above the halfway point on the gauge (just above N) whereas usually N is the furthest it gets.. Cheers
|
|
|
|