ford cvh puff of smoke on startup

[sawman]

my ford cvh(carb fed) is 21 years old and has covered 35k miles it routinely puffs a dollop of smoke on start up. its always done in in my ownership, and runs really well and doesnt continue to smoke once its going. i have probably put in a litre of oil over the last 6k miles, so not using an obscene amount. is there a reason that it does this, should i be worried???

[thetapeworm]

Valve stem oil seals?

[OllieWinchester]

Don't worry Sir, they all do that. I think it is only likely to be valve stem oil seals if it is guffing smoke on the overrun.

[sawman]

Havent noticed it on the overrun. will keep an eye on it though

[CNHSS1]

+1 for stem seals. when replaced i'll wager the ones you take out are as hard as nails, the CVH is notorious for them. Often a good way of haggling the price down on a CVH engined car, 'Ooh, blue smoke mate, engines shot, gotta be worth couple hundred quid off the asking price'

[steveo3002]

i got the little tool for these , its not a bad job to do at all

[sawman]

OllieWinchester said:

Don't worry Sir, they all do that. I think it is only likely to be valve stem oil seals if it is guffing smoke on the overrun.

Update, no smoke of overrun, does that mean the seals are not too bad yet?

[steveo3002]

ready to change now if its smoking on start ups ..dont sweat , its a cheap and easy job just the rocker off and the special tool , wont take more than a hour

[sawman]

so swapped out the seals, do they take a bit of time to bed in? I'm still a bit smokey, but not so blue

[steveo3002]

no should work straight away

blue smoke will be oil ..so if thats gone away youve fixed that bit

is it black smoke? if so then its maybe a tad rich on start up as well

[sawman]

steveo3002 said:

no should work straight away

blue smoke will be oil ..so if thats gone away youve fixed that bit

is it black smoke? if so then its maybe a tad rich on start up as well

is still seems blueish smoke, so what else could be causing me to be burning oil?

s

[steveo3002]

im no cvh expert , maybe blocked breather system or just general wear n tear