TRExp

Stag, 2500 & 2000 Forum

Distributor playing up

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accoj Avatar
accoj John Burley
Marsden, Queensland, Australia   AUS
1977 Triumph Stag
1977 Triumph Stag
1977 Triumph Stag
2004 Ford Falcon "My New Toy"    & more
Hi all
Ive had my Stag running now for a couple of years now
I got rid of the CD 175s and had a plate welded to the manifold
and fitted a 350 Holley well all went well till the motor shut down
I towed it home and found the live wire from the ign to coil was red hot just like a dead short
I took the dizzy out and off to an auto electrician and he showed me that the power wire inside the cap had rubbed against the shaft causing a short which also killed the electronic module
now a new problem I ordered a new module a red rotor arm and a new matching coil for $100 delivered
but it still wont start Ive tried a timing light on each of the leads and only 4 of the leads are firing
they are all new leads I even checked with the old ones and still no spark on 4 leads
could the dizzy shit itself just like that and if so where could I get one
I have a Rover one here but they dont fit they are totally different
any ideas
thanks John

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sujitroy Avatar
sujitroy Sujit Roy
Cupertino, California, USA   USA
Have you checked the cap? Can you swap the leads on the cap to see if those 4 same working leads work on the other non working ones?

Sujit

USA

accoj Avatar
accoj John Burley
Marsden, Queensland, Australia   AUS
1977 Triumph Stag
1977 Triumph Stag
1977 Triumph Stag
2004 Ford Falcon "My New Toy"    & more
Thanks Sujitroy yes to all
I have changed the leads separately Ive swapped leads around but still no spark
I was thinking cap as the next thing to do
the cap has probably only done about 500 miles
from new all in the last 3 years
I will buy a cap today and hope it works
Thanks John

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fatsoula Philip M
Monroe, NC, USA   USA
Sounds to me like you got an electronic unit for a four cylinder instead of a 8 ,thus only four firing

accoj Avatar
accoj John Burley
Marsden, Queensland, Australia   AUS
1977 Triumph Stag
1977 Triumph Stag
1977 Triumph Stag
2004 Ford Falcon "My New Toy"    & more
Thanks for that now thats something I never thought of
I will ask around
and also write to the people in England who I bought it off
thanks John

accoj Avatar
accoj John Burley
Marsden, Queensland, Australia   AUS
1977 Triumph Stag
1977 Triumph Stag
1977 Triumph Stag
2004 Ford Falcon "My New Toy"    & more
Thanks for your help I wrote to the place I bought the new module its called simon bbc they deal in triumph bits
anyway I spoke to someone from the Tiumph club here in Queensland
and he suggested I clean the plugs and also try a non ballast coil
well I replaced the coil and put a set of new plugs in and guess what Ive got spark on all eight leads
it still hasnt started but now I can go and look at the timing so heres hoping
thanks again
John in Australia


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sujitroy Avatar
sujitroy Sujit Roy
Cupertino, California, USA   USA
With using a non ballast coil, did you remove the ballast resistor from the set up?
I seem to recall the non-ballast coil is 3 ohms and the ballast one is 1.5 ohms.

Sujit

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accoj Avatar
accoj John Burley
Marsden, Queensland, Australia   AUS
1977 Triumph Stag
1977 Triumph Stag
1977 Triumph Stag
2004 Ford Falcon "My New Toy"    & more
Well Im back and a thank you to all but the bloody thing still wont fire
I put all new plugs in plus a new module new cap new rotor and near new leads
I set the timing by puting my finger in number 2 spark plug hole
till I got compression I then got a 15/16th spanner and wound the motor back a tad til it was on top dead centre
I replaced the plug and checked the rotor arm it was facing the coil bolt as the instructions in the factory manual I then squirted some aerostart (ether) down the carb and not a sign of life
I might as well have just had the ignition turned off
any ideas as im out of them the only thing left is to check each lead with a plug attatched and see if it sparks
I cant think of anything else
thanks john

sujitroy Avatar
sujitroy Sujit Roy
Cupertino, California, USA   USA
Is the distributor 180 degrees off.

With the distributor off by 180 the car would try and start but back fire. Someone suggested rotating the distributor by 180 degrees and this resolved it.

Sujit

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accoj Avatar
accoj John Burley
Marsden, Queensland, Australia   AUS
1977 Triumph Stag
1977 Triumph Stag
1977 Triumph Stag
2004 Ford Falcon "My New Toy"    & more
Well I did the last thing I spoke about
I took out the plugs and checked them for spark
and guess what no spark on some there was a very small spark
so I opened up the gaps and I got a good spark
so I replaced and them checked the timing was all OK
I then gave it a squirt of ether and hit the key
well would you believe it jumped into life
raced up to 3 thousand so i wound back the idle screw
and played with the dizzy it ran lovely
so there you are thanks for your help
thanks John

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