madmandegge
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| posted on 6/4/08 at 07:50 PM |
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2ltr DOHC Sierra won't start
Hi guys,
Recently bought an MK off IndyJohn, hasn't been run properly in a few months, started fine after turning over a bit when I went to view, and has
since I've bought it back. It's now garaged, and won't bloody start! To be fair to it, when started before it did need some revs to
stop it dying, but after that idled perfectly.
Nothing's changed since it's been moved, engine turns over, but won't start.
Fuel can be seen coming through what I expect is the return pipe, so I'm assuming that isn't the issue.
There's a spark, I'm planning to yank out all the plugs to see if that's the issue, but I wouldn't expect so as it's
started before!
Any ideas as to what might be the issue? Otherwise I'm planning to work through Haynes "turns over but won't start section"
Cheers, Simon
[Edited on 6/4/08 by madmandegge]
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clairetoo
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| posted on 6/4/08 at 07:54 PM |
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Have you tried some fresh fuel - this new unleaded rubbish does go off pretty quick especially in small quantities .
Its cuz I is blond , innit
Claire xx
Will weld for food......
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madmandegge
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| posted on 6/4/08 at 07:56 PM |
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I did chuck £5 worth of OptiMax in, should I put some more in do you think?
A friend suggested it might be the last dregs of the petrol, and as it's probably been in there for quite a while, that I should top it up.
If so I'll try another few lots of £5 worth (using a small plastic can to fill her up!) first thing!
edit - Is draining the tank any use/worthwhile?
Cheers, Simon
[Edited on 6/4/08 by madmandegge]
[Edited on 6/4/08 by madmandegge]
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02GF74
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| posted on 6/4/08 at 07:58 PM |
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does it have twin side draough carbs?
there is quite a magical sequence to get them to start up thant you need to experiment with.
generally 3 or 4 pressed of fast pedal to pump fuel into them then a bit of choke depending on how cold it is, turn key and off it goes - the choke
can be pushed in quite quickly after wards.
try eazee start.
does it attempt to fire at all?
is the cold a good un and connected propelry/cleanly?
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clairetoo
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| posted on 6/4/08 at 08:02 PM |
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You may need to drain the carbs if it has been stood for a while since unlike an injected system the fuel just sits in the floatbowls , not being
circulated by the pump .
I had to do that when my Fury sat in a friends garage for a couple of months .
Its cuz I is blond , innit
Claire xx
Will weld for food......
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worX
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| posted on 7/4/08 at 08:24 AM |
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If it's started and run recently then you shouldn't need to mess around doing stuff like draining the tank and the carbs just yet.
First, I would just try a can of Eezee Start down the carbs. Some engines get a taste for it and if it's been run on it a few times recently
'cos it wouldn't start conventionally  then it might have gotten a liking for it!!
Steve
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madmandegge
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| posted on 7/4/08 at 09:48 AM |
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Thanks all, I've bought some easy start, will be trying it soon. Would you just yank the air filter off and start spraying?
Fingers crossed
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MikeRJ
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| posted on 7/4/08 at 10:41 AM |
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quote:
Originally posted by worXSome engines get a taste for it
Mainly on diesels because the violent pre-ignition is causes can damage pistons and rings and cause poor compression...
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vinnievector
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| posted on 7/4/08 at 03:35 PM |
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Hi
i mate bet its the fuel like the other guys say ,my mate makes a fortune fixing lawn mowers which don't start most of the time its bad fuel.
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madmandegge
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| posted on 7/4/08 at 04:23 PM |
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Hi all,
Got it running today, chucked a few seconds worth of easy start in, turned over about 10 or so times, then fired up.
Seems to be running lumpier than before, so am assuming its the bloody petrol 
Eitherway we ran her for at least 5 minutes, am going to top up with more optimax this week, then let her idle for 10-15 minutes.
Does anyone rate the "fuel cleaning" solutions, such as Redex? I'd assume this was a good idea as the "old" petrol seems
to be causing issues, any opinions?
Thanks,
Simon
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Vindi_andy
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| posted on 8/4/08 at 12:30 PM |
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What happens with old fuel is the hydrocarbons ( the bit that makes it go bang) crystalise these can form deposits and block the needle valve
I know it happened to me OK it was a lawn mower but the cause is the same. And once the deosits have settled they can only really be effectively
removed by ultrasonic cleaning, I suspect your mate has one of those who makes a fortune fixing lawn mowers.
And dont use supermarket petrol unless you are likely to use it in a week cos it is usually at least 2 weeks into its 3 week shelf life which is how
they are able to buy it cheap and give you the 5p a litre discount. also you get better fuel economy with fresh fuel as it needs less fuel to make
the bang.
Sorry if i wandered off thread a bit
[Edited on 8/4/08 by Vindi_andy]
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MikeRJ
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| posted on 8/4/08 at 12:48 PM |
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quote:
Originally posted by Vindi_andy
And dont use supermarket petrol unless you are likely to use it in a week cos it is usually at least 2 weeks into its 3 week shelf life which is how
they are able to buy it cheap and give you the 5p a litre discount. also you get better fuel economy with fresh fuel as it needs less fuel to make
the bang.
Sorry but this is NOT true. Supermarkets tend to go through a huge amount of fuel, so the stuff in the tanks is more likely to be fresh than a
smaller "big name" filling station. The difference is price is purely down to buying power and the additive package that they specify.
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