Logo
FULL SITE MENU

v6 4.3 gla overheating

F

frenchy greg

New member
hallo

my 4.3 gl is overheating and i don t know why . only fresh water . i run a 4.3 gla with an old volvo 280 powertrim


i took a plastic bag in my sterndrive .

so i change :

- head gasket with this thread (head verified , top of the block verified )

http://www.marineengine.com/boat-forum/showthread.php?447433-head-bolt-change&p=616333#post616333

- intake gasket

- impeller (bearin , spie gasket , gasket)

- thermostat

- spark plugs




flushed and rinsed with the garden hose (i can connect it direct to the hose coming fron the sterndrive to the block ) : block and stern drive

my exhaust are clean = manifold 5 ou 6 seasons , elbow 3 season (the boat never stays more than 3 days on water . and i pull off the water when it s on the trailer

i ve tried with 2 differents temerature coming from volvo and working on a mu another boat (sender and gauge)

i ve checked my torque for the head

before removing head , i ve pulle off the oil = no water , and no "cream " on the head cover

during one hour the temperature can be fine and at one moment it start to rise to the top of the thermo !! sometimes in 5 min !!
cruising quickly ou slowy
wake board ou nothing
the engine is running fine

the only way to cool the engine is :

no cluch on the sterndrive , and running the engine few seconds (3 to 5s) to 3500 rpm . and you see the temperature falling down very quicly !!


have you any ideas !!!!!!
 
When was the water neck fitting and special beaded gasket last changed?
These are a wear item and must be routinely replaced.

This part comes up and out of the water when the hull is up on step. One tiny hole, and the seawater pump's suction will be breached.
 

Attachments

  • AQ series water neck 3.jpg
    AQ series water neck 3.jpg
    29.4 KB · Views: 42
hallo !!!

wiaitng for an answer , i was searching everywhere for my trouble on my boat!!!

what i ve found :confused:

one bolt holding the neck (you skow me) , 3/4 unscrewed !!!!!!

but the neck was under sealant :confused: :confused: , it was very tired ! i ve scratched it , clean and screwed correctly the bolts . i m lucky , the thread seems to be ok ,because i can force on my wrench .

i understand why there is a lot of sealant : before the boat was in salt sea and the volvo medium stern drive is eaten at this place ! so i think , he had fear that it was not completely air proof , so he put sealant all around the neck .
by precaution , i did the same with a new gasket


so for you , my problem was here ?? if i understand you ...

i hope , you understand what i wrote ...
 
Back
Top