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Gt6 poor starting

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Dpower87 Avatar
Dpower87 David Power
Birmingham, West Midlands, UK   GBR
Hi all my gt6 won't start without even with the choke on full.
If I spray easy start in the carb it fires up straight away
When the car is running if I pull the choke out the revs pick up so I know the choke is working
Any suggestion appreciated thanks

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spitfire50 Avatar
spitfire50 Paul Mugford
Rochester, N.H., USA   USA
David,
Get it running and do the usual check for vacuum leaks. You could take a plug out and look at it to see if it has white deposits on it before the leak check.
All the best,
Paul

gfe05111952 Avatar
gfe05111952 George Earwaker
Falls Church, VA, USA   USA
David, You might find this thread interesting http://www.triumphexp.com/phorum/read.php?7,1503193



George
1967 Triumph GT6
1967 Triumph Spitfire4 Mk2
1968 Triumph Spitfire Mk3

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trrdster Avatar
trrdster Wayne Tate
Spencer, NC, USA   USA
David, just because the idle goes up does not mean the choke is working, only the mechanical cam is set right and the cable is pulling it.
Take the cover off the choke housing and blow out the chamber and the little holes.
Of course a vacuum leak is always PITA.



Wayne
1970 TR6
2000 Jaguar XK8
1949 Triumph Roadster 2000
1978 Spitfire (rust victim)
1971 GT6 (tarp covered for 12 years, rusted inside out)
1980 Spitfire (getting all the good GT6 parts, all poly suspension and Spax shocks)

byakk0 Avatar
byakk0 Hazen Wardle
Boise, ID, USA   USA
Which gt6 and which carbs?
Also, had it worked before and this is a sudden problem? Or is think your first time starting it?
Got some pics?



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~Hazen.

Doug in Vegas Avatar
Doug in Vegas Douglas D
Las Vegas, NV, USA   USA
It could be old gas.

Dpower87 Avatar
Dpower87 David Power
Birmingham, West Midlands, UK   GBR
Thanks for you reply

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Dpower87 Avatar
Dpower87 David Power
Birmingham, West Midlands, UK   GBR
It's a mk3 with stromberg cd150se carbs
The fuel is new and it runs ok once started
Thanks everyone for your help I'll have a play around with it the weekend

GBspit Avatar
GBspit Graeme Brown
Auckland, North Island, New Zealand   NZL
David, check the manifold nuts for tightness.

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jimgt6 Jim E
Seekonk, MA, USA   USA
Remove the choke and make sure it looks like this on the inside.
If it was taken apart at any time it is possible to reassemble it 180 degrees off.

Jim


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DSCN7420.JPG

Dpower87 Avatar
Dpower87 David Power
Birmingham, West Midlands, UK   GBR
Cheers pal I'll have a look during the week merry Christmas everyone thanks for your help

Dpower87 Avatar
Dpower87 David Power
Birmingham, West Midlands, UK   GBR
Hi all over the week I have changed all the gaskets on the carbs and and a new inlet manifold gasket. I have also pulled the choke to make sure it looks ok all is new but it still hard starting and not drawing fuel on cranking. But runs fine when eventually gets running with the aid of easy start and will restart any ideas greatly appreciated many thanks

byakk0 Avatar
byakk0 Hazen Wardle
Boise, ID, USA   USA
could be dirty carbs--plugged orifices and such.

Do the pistons easily raise and lower? You may need to loosen the dampers so they fall easily for this test.
You should have adjustable needles, those require a special too I think, accessible with the dampers removed.



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~Hazen.

JohnW63 John Williamson
Apple Valley, CA, USA   USA
He says it runs fine ONCE it gets started, so I would think a choke or vacuum issue would be the case, unless... the carbs are not keeping gas in them, while sitting around, and it drains out the fuel line. Once the car is cranking, the fuel gets flowing and the carbs have enough fuel to run from there on. Being new to Triumphs, I don't know if they have manual or electric fuel pumps.

In a choked position, a vacuum leak would have a lot more of an effect than with the choke wide open.



Home of the 1969 GT6+ MK II resurrection project
and a sorry looking 1968 GT6+ parts car trying to stay whole.

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