help just white smoke on 500sec engine

[striper]

hi guys i could realy do with your help i have a
380 sec 1985
just had a 500se engine 1990 fitted on the 380 running gear i have a few probs to deal with but my biggest problem is smoke
if i drive the car steady no smoke but when i floor it i get either a cloud of what seems to be white smoke
i am very concerned
earlier i took the car for a spin thought i would see if it would smoke so floored it hell it smoked thought i blew my engine then after driving steady again smoke gone
when i got home put the car in neutreul revved it and big puff of white smoke then revved again and no smoke??????????????

i am so worried the garage who fitted the engine said it seems to be running rich
they never had any computer software gonna bite the bullet and take it to a merc tech
car seems to still have electric faults

what a head ache

will it be ok?
do you think its resolvable.
the performance of the car is amazing though

please help,
manhy thanks
scott

[C32AMG]

White smoke can be water or transmission fluid, check your coolant level if it’s low it could be a Head gasket or head, another possibility is the transmission vacuum modulator is sucking fluid into the engine. Also check you trans. fluid level.

[stevebfl]

You also might try a decarbonizing treatment. If the motor sat for a period it may have stuck rings.

Smoke on acceleration is often blow-by or ring related.

[striper]

thanks for your advice guys
went to the garage today seems that the guys who put my engine in should open a butchers shop

anyway need a new idle valve
there are so many pipes these idiots have just blocked off.

today when i checked the water level it had gone down, to the car for a spin with the mechanic it went great no smoke and flew i know it a hot day but the temperture gauge started to go up and up very slowly
i did give the car some stick though, got back and opend the bonnet and i had an air block and the water coolent went to max,

the mechanic says that this could be caused by the engine being laid up for a long time and just take time for the water to get round the system, after the block had cleard drove car home and the very steady at the temperture went down slowlk the stayed just below the 80 mar (just over half)

went and picked my girlfreing up whats about 30mins away checked water level and it seems it has not gone down.

still worried though what should the temperture being staying at?
and what causes an air block?

many thanks guys for all your help i love the car but am still so worried about the engine i have done 140 mile with this engine still not been on motorway.

if you could reply to this post it would be great, one guy told me that it could be a cracked block, but the performance is amazing!

help

scott