1955 Fairlane Y block will start when it is cold, will not start when it is warm/hot.


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By valencia - 2 Years Ago
When the engine cools down after a few hours it will start.  Seems to be no voltage going to plugs.  I have replaced the coil , didn't seem to make a difference..  Anybody else have this problem?

By Deyomatic - 2 Years Ago
Maybe a full tune-up is in order?  
Sure it isn't the starter?
Is there a carburetor spacer?  Maybe the fuel is evaporating from the bowls?

My old '60 F100 had headers and the heat would build up under the hood because there was almost no ventilation.  I drilled some large holes (3 3/8") in each inner fender and the problem was solved.  Not that I suggest doing that...just throwing it out there.  
By cos - 2 Years Ago
Is it still 6 volt?  T birds have a hard time  starting with a  6  volt system in cold or hot conditions with every thing right. Lot of info in TB club, think most folks use a electric fuel pump.  I had a 55 with high compression pistons that would not start. Put a 12 volt system in and left 6 volt starter in ,fixed problem plus some.  That starter lasted a long time.
By Robs36Ford - 2 Years Ago
No voltage to the plugs you say ?
Is there voltage to the coil ?
Check the condenser, they can fail when hot.
By valencia - 2 Years Ago
It is still a 6 volt system.  When it wouldn't start I have actually put gas into the carb and still wouldn't start.  I was thinking about fuel also until I actually bypassed the fuel delivery system.  I still have an electric fuel pump but just haven't put it in..  Thanks.

By valencia - 2 Years Ago
The engine turns over about the same whether the engine is cold or hot..  Thanks for the info.
By valencia - 2 Years Ago
I haven't tried the condenser, but good idea.  I didn't measure voltage going into coil, but I will ck that also. Thanks.
By paul2748 - 2 Years Ago
Did you recently tune it up - replace plugs, points and condenser ?  If so, may be a bad condenser - lots of problems with new condensers (china junk).  if so, reinstall you old condenser and see if that works.

Another possible cause:  make sure all your connections are clean (bare metal) and tight..  Make sure that the battery cables are the 6 volt  size, not the cables the parts stores sell for 12 V cars. 

Lastly, how good is the starter?  On a 6 V, starter must be in very good condition because heat takes a toll on an iffy starter.