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TR6 TR6 doesn't start

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J

Jordan

Freshman Member
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Hi,

here's the situation. Freshly rebuilt engine, rebuilt carburetors(cleaned-up and all).

engine cranks but doesn't start. Couple of back fire.
Things that has been checked : gas pump, wasn't put back correctly, then we made sure it was spurting petrol,
ingntion, distributor was 180 degrees off, put it back correctly and all the spark plugs sparks.
I have no Ideas were and what to look.
 
Correct firing order ? 1 5 3 6 2 4. Making sure the rotor is pointing to #1 plug wire when #1 piston is at TDC and both valves are closed ?
 
yeah that's what I figured out with the manual shop when I flipped it 180 degrees.
the spark plug wires are the same way than before the rebuilt, I didn't took em out of the distributor and it was working before so I guess this not an issue.
 
When you say you flipped the distributor 180, does that mean you removed the distributor drive gear, rotated it 180 when you replaced it and then reinstalled the distributor with the rotor now pointing 180 from your initial install ?
100_0348.jpg
 
correct. this is what I did because prior to this, the fire would be on the cylinder 180 degrees from number one when number one is at tdc on compression stroke.

can the distributor be so off ajustement that it just won't start?
 
Yeah to a certain extent. Try rotating it one way then another kind of slowly while someone is engaging the starter.

BTW, was the cam timing disturbed,cam removed ?
 
yep cam was removed, but I made certain that it was going back right with timing marks and all, triple checked.
distributor is kind of in the way it was before
 
OK. When the #1 piston is at TDC and both valves close does your rotor point to about 7 o'clock ?
12 being the oil filler cap on the valve cover .
 
At this point, yes and rotate the distributor a bit too while trying to start if you do have spark and it still doesn't start.
And if you are getting spark, you need to make sure that the carb float chambers have gas in them. Sometimes the float chamber needle valves get stuck closed and don't allow gas in.
If you pull off the fuel line and stick the extension tube of somethimg like WD40 or PB blaster into the inlet nipple you can blast the needle valve open. A little tapping to set up a vibration helps too.
Keep posting
 
ok I've checked it out, Everything seems right, for the fire.
but I've got spark from cylinder one and four dry while every others are wet.
I've tried every other things with the distributor without results
 
Have you looked at the plugs to see if they are firing outside of the engine? That is, seeing if you have spark without the plugs being installed?
 
Hard to figure the dry cylinders since cylinders 1, 2 and 3 are served by the front carb and the back 3 by the rear carb.
Have you at least tried rotating the distributor back and forth, yet... while your pal engages the starter?
 
tdskip said:
Have you looked at the plugs to see if they are firing outside of the engine? That is, seeing if you have spark without the plugs being installed?
Click to expand...
New plugs?
 
all the plugs are working out of their holes so I don't see why I would change them.

We try several position of the distributor, nothing worked

there are quite a few position though. three ajustement, hard to find the right on
 
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