Starting issue
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Starting issue
My car is a reel pita to start after a week in the garage...
I have to give it some throttle and when it finally starts there is a lot of black smoke.... from one day to another there is no problem, it starts at the first turn??
Rebuilt Qjet and all new MSD ignition.
Cant figure this out, maybe you guys can...
I have to give it some throttle and when it finally starts there is a lot of black smoke.... from one day to another there is no problem, it starts at the first turn??
Rebuilt Qjet and all new MSD ignition.
Cant figure this out, maybe you guys can...
Melting Slicks
Joined: May 2011
Posts: 2,753
Likes: 119
From: Springfield Missouri
black smoke is usually carb related, blue smoke is oil related, have much experience rebuilding carbs??? this new fuel evaporates from carb bowls, not like the old fuel. if not fuel injected, will need to refill carb bowls, thus taking a small amount of time, change to electric fuel pump to elimate this, as far as black smoke, too rich of fuel mixture, tried the mixture scres adjustment??/ need to know more of what was done to carb to pin point it down, your small request doesn't help us much! 
just noticed that you are in Sweden, same fuel over there that we have??? also, what is the adjustment on the choke, this puts extra fuel in the fuel/to/ air mixture.
just noticed that you are in Sweden, same fuel over there that we have??? also, what is the adjustment on the choke, this puts extra fuel in the fuel/to/ air mixture.
Last edited by lvmyvt76; Sep 25, 2016 at 01:29 PM.
Thread Starter
Racer
Joined: Jun 2015
Posts: 315
Likes: 20
From: Vasteras, Sweden
Carb is rebuilt by a pro, he has done this for 25 years..so that is not an issue.
Choke is oem, divorced one.
Same fuel here, using 95 oct.
Thing is, after a day or two it starts just fine, but after a week its a reel pita to start.
Carb bowl is filled otherwise it would not black smoke....i dont get this??
Choke is oem, divorced one.
Same fuel here, using 95 oct.
Thing is, after a day or two it starts just fine, but after a week its a reel pita to start.
Carb bowl is filled otherwise it would not black smoke....i dont get this??
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
I would look at the pump shot after it sits for a week. It reads like the acceleration pump dries up if not the fuel bowl loses level also. The black smoke is over rich and I have to guess at how that could happen. Tiny leak from maybe the fuel well plugs and puddles in the intake which is pretty much sealed up and may not evaporate for a long time. Or maybe the long crank along with pumping the throttle a bunch does some amount of flooding.
If it were mine the easiest and maybe the cheapest fix is just a good old shot of starting fluid after long periods of unuse. Sometimes you can just spray it into the A/C snorkel but often you will have to remove the lid. Cheap to just try it to.
Let us know what you find, it be us all.
If it were mine the easiest and maybe the cheapest fix is just a good old shot of starting fluid after long periods of unuse. Sometimes you can just spray it into the A/C snorkel but often you will have to remove the lid. Cheap to just try it to.
Let us know what you find, it be us all.
