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cold starting, or rather, not starting :/
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Author:  JRW_91 [ December 22nd, 2010, 8:15 pm ]
Post subject:  cold starting, or rather, not starting :/

hope everyones soaking up the xmas spirit! i have a slight problem :( Pops has decided that she doesnt want to start after being sat for more than 4 hours :/ becoming quite annoying! i've changed the starter motor, as i was unsure whether the original on the car was abit of a dud and dragging the volts down, and also i've changed the battery, and in the mornings, still no good, it could purely just be the cold and her suffering from it, this is my first winter with this car, aparently the original owners used to talk to her in portugese wierdos :roll: when she wouldnt start and aparently she then started... only portugese i know is that man u player.. she was fine all spring/summer/autumn... second the temp drops below freezing, shes doesnt want to know... i've checked all the obvious charging/points/fuel, although havent put any new leads on her, so i may do that before work tomorrow if i can! i've bought one of them shoddy halfords jump pack things which you leave charged up and then stick it on the car and its meant to start perfectly... guess what... it only works when shes been sat for about 4 or 5 hours... over night its useless... but its almost like somethings draining the battery over night and i cant find anything that would be! cranking is slow, and dad thinks shes not firing, the oil isnt too old and its that posh magnatec stuff which i didnt think would go all stodgy when cold but maybe it is and the viscosity of the oil when cold is dragging the cranking down, yet i cranked her over by hand the other day and she fired and started but only ran for a few seconds before cutting out and after that didnt seem to start up again!

i've been through all the obvious bits but cant really find out whats causing the lack of starting, dads ended up tow starting me for the past few days now!

Author:  knightley [ December 22nd, 2010, 8:49 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

Coil seems to be the usual culprit.

Author:  ken [ December 22nd, 2010, 9:21 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

Is the choke working correctly?

Check that the tiny spring which pulls the strangler flap across isn't missing or broken, don't just have a look to see of the main lever moves...

ken

Author:  JRW_91 [ December 22nd, 2010, 9:37 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

yeah that spring is definately fine ken, was checked when i had the top of the carb off the other day, the other day being the same day i lost my idle mixture screw somewhere on the m1 before J14.... dad thinks shes not sparking, but i've had her fire/start when i've started her on the crank! but the starter seems extremely slow in the mornings and when shes been sat for a while :/ anything upto 4 hours and she might be lucky, but after that she doesnt really want to know :( unless i get my halfrauds jumper pack out and then she'll start!

Author:  Ventflaps [ December 22nd, 2010, 11:24 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

Joe, is poppy running on the original points ignition? If so, have you checked that it's in good nick and correctly adjusted?

Some folks have previously found that the additional current drawn by some 'leccy ignitions coupled with high resistance on a worn starter has been a source of woe. A typical symptom of this is when the car seems to just be firing as soon as you stop operating the starter.

Author:  Devils Advocate [ December 22nd, 2010, 11:28 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

From the symptoms in your first post, Joe, I think you are referring to it being very slow to crank over - ie: flat battery symptoms? (As opposed to it cranking over quickly enough but just not firing?)

In which case, and weak or missing spark could be down to lack of volts rather than a wiring fault as such.

Can you confirm - are you saying that after 4 hours standing your car doesn't crank over very well?

Author:  Nibby_Pit [ December 22nd, 2010, 11:36 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

You say the cranking is slow?
You have changed the battery and starter motor?
Usual culprit for this is bad earths or poor connections to the starter motor.
Remember the starter earths through the bellhousing and gearbox lid.
I would certainly remove and clean, secure and replace any suspect cabling issues before you delve in too deep
I have had problems with motors in the past when they are dropping 1/2 volt accross a ground connection and it really hits home when the ambient temperature falls below Zero.
If you have no access to test equipment I have tried cranking the engine with a jump lead from the negative terminal direct to the starter body and if this is the problematic area the cranking speed increase is remarkable.

I certainly would not dispel anyhing that Ken has said about being choke related.

DOes it fire when you let go of the ignition as above post?

Author:  JRW_91 [ December 22nd, 2010, 11:46 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

just to confirm, yes when shes been sat for a period, the cranking is slow! the battery is a replacement lion battery, which i believe was excellent! it was the battery on my old car Lily, and she'd been sat for about 5 months, hadnt been touched, and when i tried her she started first time!

i believe there may be a case of broken down HT leads, as she just fired and ran for a few seconds, but i definately saw a spark near my N/S front wing, where the HT lead just happens to rest... definately going to order a new set of them tomorrow morning!

shes currently on charge outside, and will only start on the handle and a tiny bit of choke, she does crank over ok on the key but not firing!

Author:  ken [ December 22nd, 2010, 11:57 pm ]
Post subject:  Re: cold starting, or rather, not starting :/

Joe,
might be an idea to get hold of one of these spark testers, then you'd know for certain whether there's a spark (or not) when the starter is in operation.

Might also be worth checking your plug gaps, 0.6mm gives more chance of success when the weather's very chilly.

ken


Image
burning the candle at both ends by slcchassis, on Flickr

Author:  JRW_91 [ December 23rd, 2010, 12:08 am ]
Post subject:  Re: cold starting, or rather, not starting :/

plug gap... shes on bosch super 4's :/ got quite a few gaps to check!

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