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winter blues

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davesopener
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winter blues

Postby davesopener » 13 Jan 2009 19:50

hi,
after thinking my battery was just flat i charged it up
ignition turns but no engine firing
spark plugs look ok as do ht leads
not sure how to check the coil or dizzy
wondered if anyone could advise me on what to check and how
sorry for sounding simple here!!!
cars not moved for couple of months been sat in a dry garage.

ty
dave

Maxwell
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Postby Maxwell » 13 Jan 2009 20:06

Dave,

Are you sure the battery's topped-up enough? After a period of standing [eight weeks] <i>Maxwell's</i> battery turned the engine but it refused to fire. It took heavy-duty jump-leads and the Company's BMW to kick it into life...

Good Luck \ Maxwell [;)]

saabfast
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Postby saabfast » 13 Jan 2009 20:10

Start with the basics. Is there a spark at the plugs? Pull one out, connect it to the HT lead and hold the end against the block (away from the hole in case fuel is there), and have somebody turn the engine over. If it shows a spark check for fuel availability. Were the plugs wet when taken out? If not check for fuel at the carbs by pulling a connection off the float chamber and turning the engine over (watch where it squirts.
Initially it is a matter of working back through the ignition and fuel systems to see that both are happening in the cylinder.

Alan
Saab 9000 Stg 1
Saab 9000 2.3 FPT Auto
'81 TR7 DHC
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REPLIC8
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Postby REPLIC8 » 13 Jan 2009 20:26

The last thing you should do is hold the spark plug while the engine turns over! At best you'll get a nasty shock, if you've got heart problems you'll probably kill yourself! Try WEDGING the plug against the block with a piece of wood - much safer. [;)]

Andy
1981 UK SPEC TR8
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Shauniedawn
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Postby Shauniedawn » 13 Jan 2009 21:09

Hiya Dave.

Good advice given.

I'd start with the battery - make sure the electrolyte is up to level and let it have a dam good trickle charge - say 24 hours or so.

Then, you can see if there is fuel as described above. I'd whip the plugs out, and spin the engine over (easier on the battery and saves fouling plugs)and check for fuel.

As it's been stood for a while the fuel may have drained back to the tank (?) and might take a bit more cranking than normal to get it up to the carbs - just a thought. So don't be afraid to let it crank for a while. And, is there any fuel in the tank?

Whilst the plugs are out you could give them a clean and check the gap. No harm in checking for a spark - but if the car worked when you put it away, it's less likely to be this.

You might have to re-charge your battery at this stage if you've flattened it, but if not, connect up and give it a whirl. Use jump leads and connect to another for a bit of extra boost if you have any doubt over the battery at this stage.

I tend to use one of those battery mate little chargers to keep the battery(ies) topped up during periods of inactivity. I'm swopping it between 3 batteries at the moment - which is a bit of a a pain, so thinking of investing in another, maybe another two, to save forgetting. As I do regularly!

Hope this helps, and keep us posted.

Shaun

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saabfast
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Postby saabfast » 13 Jan 2009 21:35

Agreed REPLIC8, I meant to add that if you get a shock its working! Seriously, better to hold with insulated pliers etc as there is around 15000 volts (but very little current), can give a bit of a jolt if the HT leads are not good.

Alan
Saab 9000 Stg 1
Saab 9000 2.3 FPT Auto
'81 TR7 DHC
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bottomtop
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Postby bottomtop » 14 Jan 2009 00:02

If you have electronic ignition, check where its wiring is spliced in. I had an experience as you describe - turns over fine, no spark. Turned out that corosion had built up where the electronic ignition wiring had been spliced in (PO's damn cheap crimping terminal kit strikes again).

Cut old terminals off, stripped and cleaned up wires for new join, soldered, insulated & off she went.

Cobber
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Postby Cobber » 14 Jan 2009 01:08

<font size="2"><font face="Comic Sans MS">To avoid getting a big handful of volts when testing for spark I made this up:</font id="Comic Sans MS"></font id="size2">

Image

80'Triumph TR7, , 73'Land Rover (Ford 351. V8),
'89 Ford Fairlane
85'Alfa 90, 69'Ford F250.
76' Ford F100
I sold the '61 International AA120 to a mate.. he hasn't paid for it yet!
Sold the Jag XJ12 too

PeterTR7V8
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Postby PeterTR7V8 » 14 Jan 2009 01:16

On the basis that it is always more fun to blow yourself up than get an electrical shock I suggest the following: get some aerosol fuel and spray a quick blast into the carb intake (take the air filter off 1st) while someone is turning the engine over. If it fires while the spray is feeding it then your ignition is probably ok and you should look at the fuel mix. Either no fuel or bad mixture. Make sure fuel is flowing - after that it gets complicated.

Good luck.

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jclay (RIP 2018)
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Postby jclay (RIP 2018) » 14 Jan 2009 03:47

The first thing I would do is to put a jumper wire between the POS battery terminal of the battery and the positive post of the coil. If it starts, then you have a bad inline resistor. (I have forgotten what you call the darn thing!!) <i>If you are hesitant to do that, hook the wire to the positive side of the coil and have someone turn the car over. Just touch the tag end of the wire to the battery post and see if you get a hit.</i>

Cobber Edit your post and put a "[" in front of the ing] and you image will show up.

jclay

[url="http://web.mac.com/jclaythompson/iWeb/Site/Welcome.html"]My Triumph Site[/url], [url="http://web.mac.com/jclaythompson/iWeb/Technical/Intro.html"]Technical Stuff[/url], [url="http://homepage.mac.com/WebObjects/FileSharing.woa/53/wo/HJMTK8gsojtwKleP.1/0.2.1.2.26.31.97.0.35.0.1.1.1?user=jclaythompson&fpath=Triumph_Articles&templatefn=FileSharing4.html"]Download Page[/url]

Cobber
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Postby Cobber » 14 Jan 2009 05:09

<font face="Comic Sans MS"><font size="2">Cheers Jclay, I didn't notice the "[" in question had somehow fallen off! I thought my laptop was made by Toshiba not Lucas!</font id="size2"></font id="Comic Sans MS">

80'Triumph TR7, , 73'Land Rover (Ford 351. V8),
'89 Ford Fairlane
85'Alfa 90, 69'Ford F250.
76' Ford F100
I sold the '61 International AA120 to a mate.. he hasn't paid for it yet!
Sold the Jag XJ12 too

Hasbeen
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Postby Hasbeen » 14 Jan 2009 05:55

Cobber, I'm really disappointed.

I always had you pegged as one of those tough guys who just held the
spark plug lead, to see if it had spark.

I have always wanted to do that, ever since I saw a mechanic in the
NSW bush do it, as the easiest way. I've never quite managed the
guts, yet. I find my electric fences bad enough, & their just mini
amps.

Hasbeen

Cobber
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Postby Cobber » 14 Jan 2009 06:08

<font size="2"><font face="Comic Sans MS">Now Hasbeen I've had more than my fair share of volts by the hand full!
Many years ago I was adjusting the timing on a car and I got a jolt from the dizzy, my hand jerked away from the dizzy into the fan! Now at the time I happened to have a pen in my mouth, so of course I then jerked my hand out of the fan and managed to hit myself in the mouth, pushing the pen into the back of my hand leaving both my mouth and hand bleeding! </font id="Comic Sans MS"></font id="size2">

80'Triumph TR7, , 73'Land Rover (Ford 351. V8),
'89 Ford Fairlane
85'Alfa 90, 69'Ford F250.
76' Ford F100
I sold the '61 International AA120 to a mate.. he hasn't paid for it yet!
Sold the Jag XJ12 too

Hasbeen
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Joined: 28 Apr 2005 12:32
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Postby Hasbeen » 14 Jan 2009 08:30

Thanks for the laugh Cobber. I can picture it clearly.

I'm sure I enjoyed it more than you.

Hasbeen

Cobber
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Postby Cobber » 14 Jan 2009 08:33

<font face="Comic Sans MS"><font size="2">Yeah the bloody apprentice enjoyed it too!
The little bugger wouldn't let me live it down! </font id="size2"></font id="Comic Sans MS">

80'Triumph TR7, , 73'Land Rover (Ford 351. V8),
'89 Ford Fairlane
85'Alfa 90, 69'Ford F250.
76' Ford F100
I sold the '61 International AA120 to a mate.. he hasn't paid for it yet!
Sold the Jag XJ12 too

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