Question about 2006 Triumph Tr 7

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Hi, i have a triumph spitfire 4 1963 have recently converted it from pos ground to neg ground ,fitted alternator new plugs points condenser ,coil, car runs for aprox 3 miles then splutters to a halt ,after waiting 15 mins starts again for another 3 mile ,any suggestions to what could be the problem cheers

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It sounds like you have to fit a ballast resistor in the power supply to the coil or get a 12 volt coil. Later spits (-ve earth) used a 9 volt coil with a resistor to drop the battery volts down when running, when starting the full volts are used but the starter will drop this to 9 or 10 anyway, this helped cold starts.)

Posted on Aug 10, 2010

Testimonial: "hi, thanks for the advice , fitted a 12v neg coil from a mini , also cleaned petrol pump out that helped a lot , car seems to be running spot on "

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Cant get 8n to run. starts but misses. new plugs, crb,distributor, coil, tank shut-off, ign switch, ceramic resister, ballast resister, fresh gas, but has power to ign switch whether on or off.


If it starts but misses meaning it runs but not on all cylinders?.....then,
Are the spark plug wires in the correct firing order?
Are the spark plug wires in good shape?
Is there compression on all cylinders?
If a valve is bad it won't fire smoothly.
If you pull the plugs are any black with carbon?
(a black carbon coated plug will not fire,especially with a 6 volt system)
Is the distributor car attached fully and correctly?
When the distributor cap is off,is there any side play in the distributor shaft?
Is the point gap correct on the points?
Start the tractor cold and feel the spark plugs,the one or two that are colder than the others are the missing cylinders,if two are cold you could try switching those spark plug wires with each other,in case they are mixed up,and if two are missing are side by side you could have a head gasket leak between cylinder problem.
TIP 1, the BEST THING to do on a Ford 8N is to convert it to 12 volts neg ground.Add a alternator,(76 chev pickup alt fits good) leave the starter as it is (it does care if it's positive or neg ground or 12v) and add a 72 dodge ignition resistor in line to a 12 volt coil.(unless your new 12v coil does not need a resistor)
This set up will increase your fuel economy,add power and start instantly in any temp.
TIP 2,you can use unleaded fuel in a Ford 8n as it already has hardened valve seats.
BUT 10% Ethanol fuel is BAD,it can be used, but shut off the fuel at the tank and let the tractor carb run dry before shutting it off if you are not going to use the tractor with in a few days.

May 21, 2017 | Cars & Trucks

1 Answer

1974 truimph spitfire mk4 firing order


Edward, Firing order 1-3-4-2 for spitfire. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Engine Tuning Data for the Triumph Spitfire and GT6
Distributor drive gear and firing order question Spitfire GT6 Forum...
getting spark plug wires back in the right order MGB GT Forum MG...
http://www.repairservicemanuals.com/Triumph

Jun 14, 2016 | Triumph Cars & Trucks

1 Answer

I have a technical question about the SU carbs of my 1966 Triumph Spitfire MK 2.


the little plastic /rubber bit has come off the shut off valve ,although you have no doubt found this out by now .

Aug 20, 2015 | 1966 Triumph Spitfire

1 Answer

I have a 1957 283 points dis with the key on on i have power to the pos. side of coil also neg side power to points but nothing goingto plugs from cap


check the rotor of the distributor inside the if not damage then check the common ground from the coil negative to the distributor then check the coil positive if there is a battery supply 12 volt

Jun 17, 2013 | Cars & Trucks

2 Answers

I have a Triumph Spitfire MK2 1965. How do I tell if it is a pos gnd or neg gnd


Easiest way is to follow the battery cables. if the Negitave (-) goes to the engine block , frame or body, that is a negitive gorund system. If the Positive (+) does, it is a Positive ground system.

Mar 23, 2011 | Triumph Tr 7 Cars & Trucks

1 Answer

How do i wire a smiths tachometer in a triumph spitfire 1500


easy... remove the mechanical tach and fit the light from the old one to the new eletric tach. Next run a wire from the back of the tach connection that looks like a small pole and run that to your ignition coil - negative side. Also make sure the ground wire (black) is mounted to one of the install bracket posts that hold the tach in place behind the dash.

Jul 22, 2010 | 2006 Triumph Tr 7

2 Answers

I have a 1976 Triumph Spitfire 1500. It will ...


On older model vehicles we start having lots of electricle issues. the current flow gets interupted and broken because ALL of our GROUND wires get corroded where they are screwed to the body or frame. it is important that these connections get sandpaper shiny cleaned and tightly screwed backin. solves many issues.

Apr 07, 2017 | Cars & Trucks

2 Answers

Just finished 12 volt conversion on 49 V8 flathead. Starter engages but engine won't start. Appears to be getting fuel.


You might not have spark as the 12 volts needs a ballast resistor or the points burn out preytty quick. 8 volts at the coil in run with the points open and 0 with the points clsed and battery voltage at the coil when cranking. coil wire near the intake manifold while cranking should jump at least 2 inches. Closed points should be 0 volts at the neg on the coil. pos and neg should be the same 12 volts with the points open. if not either the coil or the points are bad. The condenser can fail and no spark with all the rest right

Oct 12, 2009 | 1991 Plymouth Colt

2 Answers

Where is number one on distribor cap? which is cylinder #1 ? On 1980 triumph TR7


looking from above, it's top right rear, towards the engine block!, same as the spitfire,& Vittess. Lucky git for having one! The easiest way to find out, is to remove the spark plug, turn the engine over with a socket on the bottom pully of he engine, put your finger in the plug hole until No 1 it at the top of it's stroke with the rotor arm fitted, then fit the distributer cap, There is only one way way it should fit, if not rotate it 180 degrees, and try again. To set the other firing line, follow the same instrusctions above, but I think it's fire 2413.

Regards

Dave

Jul 15, 2009 | Triumph Tr 7 Cars & Trucks

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