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I have a 1966 Triumph Bonneville that is only running on one cylinder, can anyone help me please.

Have fitted two new coils, HT leads and plugs. New fuel lines and petrol taps. Cleaned out both carburettors, bottom bowls, main jets, and banjo filters.

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6ya6ya
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SOURCE: Craftsman Wee trimmer will only run when tilted on its side.

its your flaot in your little carb

Posted on Mar 24, 2009

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SOURCE: Briggs and stratton engine surges and slows, repeatedly

There is still either water or debree contaminating the fuel system. Surging is usually debree, empty and flush the tank with gas or Iso alcohol, disassemble carb soak in solvent for 30 minutes blow out the carb passages, reassemble and if the problem persists run engine at top rpm with air cleaner off and block off carb intake with hand, this will stall the motor restart and repeat 4 - 5 times this wiil draw out any debree or other blockage in the carb.

Posted on Jul 25, 2009

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SOURCE: fuel pump relay

first alway check the simple things first like fuses and relays then start playin with changin out parts. under the hood you sould find a fuse panel if the lid does not tell you what is what you need to look into the service manuel find the fuel pump relay and switch it with the same type relay can works some the doesn't effect the engine like a fan relay for expamle. then try to start engine when turning key to the run pos you sould hear a fant hum or whine from the pump. if thats a no go take the main fuel line off before the fuel filter and see if a good stream of fuel comes out when you turn key to run pos.if so replace fuel filter.

Posted on Oct 08, 2009

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SOURCE: 1988 audi 80 4cyl. no spark from coil,new coil fitted,coil lead

hi i have a coupe 1994 have same prob told by audi to replace the distributor as was common failt on audi's i have replaced new leads ,coil ,dissy cap, and arm ,still the same awaiting on distributor to see if this works hope this helps

Posted on Oct 18, 2009

Grumman_1
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SOURCE: Toro 6.5 Tecumseh Recycler won't stay running

I have the same mower and problem. Found out the issue was the carburetor. Pull the Carb and do a quick cleaning. Order the replacement kit prior to working on. My bowl o-ring was shot and I couldn't get a seal after cleaning it out.

Posted on Jan 18, 2010

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2 Answers

My JD SX 320 misfires under load (one cylinder only)


plugs will not spark under compression if they are faulty or the HT lead id off too high a resistance. or mixture is incorrect
In the real old times when plugs were cleaned and tested one of the tests were to test spark in a dry compressed air chamber where if there was a problem they failed to spark
as you have fitted new plugs it comes back to the ht lead
they are carbon tracked lined internally, the connection for the plug and cap is just a steel pin shoved up into the carbon track
try using copper ht leads where the copper wire comes out to the connection
there could be a valve seating problem or weak valve springs on that cylinder that is not allowing proper seating under compression
if you have 2 carbies then the float level for that cylinder may be too low and under load starving for fuel

Jul 16, 2016 | Garden

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Left hand cylinder wont fire right hand side fires no problem


Could be one of the carbs playing up. Maybe a blocked or restricted jet.

Oct 12, 2015 | Triumph Motorcycles

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Triumph T120 1968 spark problems


Hi, I would suspect that the dual coil is the problem, normally on the Bonnie you have a spark every other stroke. Because the engine is a parallel twin (both pistons go up and down at the same time) you are firing both plugs every time the pistons are on the ignition stroke. This is why you get a shock the HT has to go somewhere and you are releasing this to the frame when you take out a plug. Dual output coils are really designed for 4 cylinder bikes where the second spark can be lost during the firing cycle. Most old Honda's CB400/500/550/750 used the dual coil ignition system. You need to have a coil for each plug as you had before. Hope this helps

Mar 07, 2015 | Triumph Motorcycles

1 Answer

How to identify motor size and type on 1966 triumph motorcycle


http://motorbike-search-engine.co.uk/classic_bikes/triumph-classic-motorcycles.php This link should help. I had a 550 way back when. There was also a Bonneville model that was 660. Both are side by side twin cylinders. The bike was not hard to work on but it rattled and required chain adjustments and frequent maintenance on the crappy electrical (Lucas) system.

Apr 23, 2011 | Triumph Bonneville Motorcycles

1 Answer

One cylinder spark plug not firing- replaced plug ran well for 30 seconds then stopped firing


Hi
With Ignition switch off :-
1st Check for bad connections, broken/crushed wires, continuity & resistance between the cap, HT lead, coil, ignition coil primary wires
2nd Disconnect the CDI unit from its connector & check for the same between the loom side of the connector back to the coil
3rd Check coil is earthed

If all OK suspect the CDI unit but double check everything first( there are some more checks as well), as these are very expensive

Ride safe
Bike-Doc

Please rate this solution well if it has helped !!
Any comments welcome


May 10, 2010 | 2003 Triumph Speedmaster

1 Answer

95 model thunderbird, runs great until idle, cuts out no spark bike starts again when it feels like it. when idling engine randomly miss fires as if you were flicking the kill switch on and off quickly....


The pick-up coils fail sometimes but usually lead to a complete failure
Before just replacing parts u can eliminate some suspects ie kill switch,clutch switch & ignition switch by bridging
Also check that there isnt a spark jumping from an HT lead or plug cap

Ride Safe
Bike-Doc

Please mark as helpful(if it has been!!)

Aug 19, 2009 | 1995 Triumph Triumph Thunderbird

3 Answers

I can only find three spark plugs on my freelander v6 engin


Remove
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover.
  1. RH bank only: Release locking clips and disconnect multiplugs from plug top coils.
  2. RH bank only: Remove 6 bolts securing plug top coils to RH camshaft cover and remove coils.
  1. LH bank only: Noting their fitted positions, disconnect ht leads.
  2. Using a 16 mm plug socket, remove spark plugs from both cylinder heads.
Refit
  1. Set gap of each new spark plug to 1.00 mm .
  2. Fit spark plugs and tighten to 25 Nm (18 lbf.ft) .
  3. LH bank only: Connect ht leads.
  4. RH bank only: Fit plug top coils to spark plugs.
  5. RH bank only: Fit bolts securing plug top coils to RH camshaft cover and tighten to 9 Nm (6.5 lbf.ft) .
  6. RH bank only: Connect multiplugs to plug top coils and secure with locking clips.
  7. Fit engine acoustic cover.
  8. Connect battery earth lead.

Jun 04, 2009 | 2003 Land Rover Freelander

1 Answer

Problems in wet weather and cleaning my triumph won't start.


Water is getting into your ignition coils.
Trace the spark plug lead up to the coil.
Get some ignition sealer spray and spray loads of it on the leads and coil.
When a bike is new, it is sealed. After washing with detergents it gets washed away. Spray the leads and coil once a week to keep them totally dry.
An immediate way to get round when wet is to spray wd40 on the leads and coil, it should start straight away.
But, don`t spray ignition sealer on until it is totally dry.
Hope this helps

Jan 26, 2009 | 2004 Triumph Triumph Bonneville

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