You guys may have answered this, I have checked previous posts, but nothing, so; I have a 302 which has a mild cam up grade, RPM performer intake, with 600 Edelbroke Cam manual choke. I switched from a 2bbl to a 4 bbl. Everything else is stock.
When i start it, which is hard when cold, it does not smoke, but when it gets warmed up I get excessive white smoke. :whoaa: ANY BODY GOT ANY IDEAS?
Spark plugs are dry and no build-up (at least 1-4)
You guys may have answered this, I have checked previous posts, but nothing, so; I have a 302 which has a mild cam up grade, RPM performer intake, with 600 Edelbroke Cam manual choke. I switched from a 2bbl to a 4 bbl. Everything else is stock.
When i start it, which is hard when cold, it does not smoke, but when it gets warmed up I get excessive white smoke. :whoaa: ANY BODY GOT ANY IDEAS?
Spark plugs are dry and no build-up (at least 1-4)
You guys may have answered this, I have checked previous posts, but nothing, so; I have a 302 which has a mild cam up grade, RPM performer intake, with 600 Edelbroke Cam manual choke. I switched from a 2bbl to a 4 bbl. Everything else is stock.
When i start it, which is hard when cold, it does not smoke, but when it gets warmed up I get excessive white smoke. :whoaa: ANY BODY GOT ANY IDEAS?
Spark plugs are dry and no build-up (at least 1-4)
Some more info from you will help.
Hard to cold start means ?? - does it fire, then stall continuously; no cylinders firing at all; some cylinders fire; or does it flood, run rough and stall?
When white smoke comes out - is it at idle?; or when being revved; or being driven.
White smoke, imo, usually means a lean condition. When my cars have had that condition it has happened on highway only but spark plugs still read well.
If I remember correctly a leaking intake manifold can cause the same problem.
For the hard to start part, try checking your points condition and gap.
Yeah, when you say white, I think trans fluid. If the cooler lines are blocked (and once the fluid heats up) it can vent theu the breather on top of the trans. But i assume this is smoke coming out of your exhaust pipe(s)?
If it's fuel, it will be more of a grey or black. Oil leaking is bluey/grey.
Does it smoke in normal cruise or only with your foot flat?
What condidtion are your plugs (other than not oily)? They can tell whether you're running rich or lean. Have a look at this link....
Stem seals..
never seen em leak on back off (maybe they weren't that bad)
But on extended overrun/gear braking, once power is applied, the world behind dissapears
but the others are right..not enough info, and some definite time required by knowledgable people to diagnose efficiently
Valve stem seals will cause smoke between gears on a manual, if they are leaking -
when backing off the accelerator vacuum is created in the intake port which sucks the excess oil from the vavle and on the next cycle it gets burnt, therefore smoke.
Some more info from you will help.
Hard to cold start means ?? - does it fire, then stall continuously; no cylinders firing at all; some cylinders fire; or does it flood, run rough and stall?
When white smoke comes out - is it at idle?; or when being revved; or being driven.
White smoke, imo, usually means a lean condition. When my cars have had that condition it has happened on highway only but spark plugs still read well.
If I remember correctly a leaking intake manifold can cause the same problem.
Hard to cold start means : If I don't start it for a couple of days, it will fire up then shut off. It's like the engine slowly dies down (only stays started for 5 secs), then shuts off. I have to step on the gas when it dies down to get the engine to stay on. Then its runs, but then rpm 's fluctuate, 950 to 1000, 1000 to 900, 900 to 1000, 1000 to 950.
The white smoke comes after it has warmed up or it gets to operating temp. I have adjusted the idle and carb ( idle higher carb leaner/ Idle lower carb richer). Unfortunatly i don't have a vaccum gage and the timing piont on the block has been broken off. Currently, the rpm on the tach reads 950 at idle currently, seems to runs kinda rough. both valves on the carb is set at a 3/4 turn from the seated position. Now, it goes away for awhile then comes back. The more I open the valves, say 1 3/4 turn from seated position, the more smoke I get. I am confused.
I just replaced the intake manifold gasket, i had leaking oil and Radiator fliud before. now there is no leaks of oil and fluid , at least that I can see from that area.
You have to adjust all the settings together to get the best tune (carb + timing).
Not knowing where your timing is at is like having a compass without a needle. Get a new pointer from the wreckers and buy a timing light if you don't have one....both very cheap.
Sounds like you may just be running it rich @ idle.....although 3/4 of turn from the mixture seat isn't much.
The way you have to fan the gas pedal until it warms up a bit is nothing I haven't had to do for the last 13 years when using a carb without a choke.
Make sure both mixture screws are set the same. If you screw one, you screw the other the same. Set the timing to about 6-8* (assuming stock motor), with vacuum advance hose disconnected from dissy and blocked. Lean your mixture to get max rpm, as it increases, wind the fast idle screw out to decrease the rpm and keep doing this till it just starts to run rough and then tweek the mixture screws out a little. Check your timing again, and adjust if necessary, along with fast idle screw.
As an experiment, see if you can shut your motor off by winding the mixture screws in all the way....ie: no fuel = engine stall. If it still runs, even roughly, you're getting some overfuelling from somewhere else. ie: leaking power valve or throttle plates open too much with fast idle screw.....these 2 things can cause an overly rich and smokey situation.
Thanks everyone for your responses. I am happy to hear that it may just be a timing adjustment issue and setting the Carb up correctly. This is the orginal block which i am hoping/planning to stroke it out to 331ci. I was thinking I had a major issue on my hands. This my 1st Ford, so i am kinda lost, for now.
Mate, all that effort for only a few more meezly cubes! You'd want to go a lot more than that for all the effort it will take! Absolute min would be a 351.....but hey, why stop there? :hehe:
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