greed1
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 posted on 27/10/09 at 10:34 PM |
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engine only just turning over help
it turns over when there are no spark plugs in
when they are in it tries but fails
is it me connecting it wrong
battery is form my tin top so is charged
any help
[Edited on 27/10/09 by greed1]
Drive it stright sideways
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austin man
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| posted on 27/10/09 at 10:42 PM |
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timing could be out ?? what engine is it
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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turbodisplay
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| posted on 27/10/09 at 10:46 PM |
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Bad earth or ectrical conection?
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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greed1
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| posted on 27/10/09 at 10:46 PM |
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should have said that lol
it is a x flow 1700
Drive it stright sideways
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Dingz
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| posted on 27/10/09 at 10:54 PM |
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Bad earth, I bet
Phoned the local ramblers club today, but the bloke who answered just
went on and on.
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RichardK
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| posted on 27/10/09 at 10:57 PM |
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knackered battery, tried jump leads or starter pack?
other than that bad earth
Cheers
Rich
Gallery updated 11/01/2011
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austin man
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| posted on 27/10/09 at 11:04 PM |
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timing could be 180 degrees ot have you set the static timing on the distributer using a bulb, battery not a problem as u state its from your tin top,
could be an earth could also be a dodgy solenoid or starter drawing too much current
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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ReMan
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| posted on 27/10/09 at 11:05 PM |
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Is this a run in, known good engine?
Or an unknown or recently rebuilt engine?
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greed1
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| posted on 27/10/09 at 11:17 PM |
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unknown rebuilt engine but at least 5 years since it has been running i think
maybe earth as i was only holding it down a bolt head  
the wire i was using was getting hot could that be a sign of a dodgy solenoid/starter
thanks for the fast replies
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MikeR
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| posted on 27/10/09 at 11:18 PM |
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this is going to sound daft - disconnect the alternator belt. I had a duff alternator, it caused so much friction with the plugs in the starter
wasn't man enough to turn it all over! Although for u i'd expect it to be one of the previous suggestions
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greed1
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| posted on 27/10/09 at 11:23 PM |
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it is worth a try if a better earth doesn't do it before i start to take bits off the engine
Drive it stright sideways
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turbodisplay
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| posted on 28/10/09 at 07:41 AM |
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A dogy earth willmake the wire hot at the point of poor contact as heat is produced at the point of high resistance.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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mad4x4
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| posted on 28/10/09 at 07:46 AM |
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if you take the plugs out does it turn over easily by hand - ie no compression.
If it has been sitting for 5 years. could be the rings have dried out and sized in the bores.
Some oil into the bores and turn manually to lubricate the pistons might help
Scot's do it better in Kilts.
MK INDY's Don't Self Centre Regardless of MK Setting !
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greed1
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| posted on 28/10/09 at 08:00 AM |
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i had put oil on the pistons when i took the valves out to relap them
it does turn over easy
edit
i forgot to say it was onlt turning slow with the spark plugs out
[Edited on 28/10/09 by greed1]
Drive it stright sideways
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leon51274
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| posted on 28/10/09 at 08:23 AM |
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I had this exact same problem. I checked everything, turned out it was the old inertia starter motor, replaced with new in exchange for old plus £15
and job was sorted.
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adithorp
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| posted on 28/10/09 at 08:27 AM |
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Then it's either...
A bad battery, but you say thats ok in your tin-top.
or...
a very tight engine. Can you turn it by hand with the plugs out?
or...
Battery and earth leads not up to the job or poorly connected,
or...
A poor starter,
Try adding good jump leads direct from the battery to the starter main feed and the starter body. If that cures it its the leads, if not it's
the starter.
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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pewe
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| posted on 28/10/09 at 12:48 PM |
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Had a similar problem with mine recently. After checking all leads and contacts it turned out that the armature windings in the starter motor had
part-failed.
So despite a fully charged battery and clean contacts throughout it would only turn over imtermittently. A re-furbed replacement sorted it out.
May be worth taking it off and having your local specialist bench testing it for you.
BOL, Pewe 
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greed1
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| posted on 28/10/09 at 07:17 PM |
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put a better earth wire and properly bolted to the gearbox which did make it turn faster without plugs
but with spark plugs in if still failed
there was a small amount of smoke that came from the starter motor so i guess that is the next thing to change
thanks for all the help i will you keep up to date
Drive it stright sideways
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prawnabie
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| posted on 28/10/09 at 07:22 PM |
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What is the compression ratio? Most tuned crossflows really need a geared motor to turn over properly!
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greed1
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| posted on 28/10/09 at 07:40 PM |
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all of the compressions are 170 does that sound right
Drive it stright sideways
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rusty nuts
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| posted on 28/10/09 at 08:05 PM |
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quote:
Originally posted by austin man
timing could be 180 degrees ot have you set the static timing on the distributer using a bulb, battery not a problem as u state its from your tin top,
could be an earth could also be a dodgy solenoid or starter drawing too much current
Doesn't matter what the timing is set to with NO spark plugs fitted !
Can the engine be turned over easily using a spanner on the crank pulley bolt ? Is the correct starter motor fitted? Inertia starter uses a
different ring gear to a pre engaged , using incorrect starter could cause problems . As already suggested it could be a bad earth , try connecting a
jump lead between the battery negative terminal and a good earth point on the engine . If the engine turns over more easily check the throttle cable
and the choke cable for damage
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prawnabie
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| posted on 28/10/09 at 08:33 PM |
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no i mean the compression ratio, if its high thaen the starter motor will has trouble compressing the air in the engine when turning it over
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greed1
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| posted on 28/10/09 at 10:38 PM |
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how do i find out what the compression ratio is
turning the engine by hand haw easy is easy
quote:
Originally posted by rusty nuts
If the engine turns over more easily check the throttle cable and the choke cable for damage
i haven't even got a throttle cable yet lol and not connected the fuel lines just trying to get it turning over with spark plugs in at the mo
Drive it stright sideways
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greed1
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| posted on 30/10/09 at 04:46 PM |
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it lives it lives
thanks for all the help
to start with it was a bad earth
then it was a bad positive (losing voltage through the switch (wired wrong by me )
then the points werent making contact
then when i got that sorted the ignition timing was 90 degrees out
but now it lives
quick question without making another thread
should a ZX6R fuel pump stop running when it gets to pressure
thanks again graham (who couldnt have done it if a mate wasnt driving past my house on his way to Cumbria)
Drive it stright sideways
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ReMan
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| posted on 30/10/09 at 10:00 PM |
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yes
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