I am in Florida and use boat all the time.
Recent months when engines are hot difficult starting. Have twin 4.3, When cold fires up first turn of key. Other times it fires up even when hot.
Speaking with a tech a working engine is difficult too fix, Vapor lock we are thinking but engine room is cool. Engine temp is normal , thinking gets too hot cause water not cooling fuel cells not fast enough ? Ran a number times with engine hatch open too keep cool
No pattern on which engine would be difficult starting
Start port engine start right away, Turn starboard cranks away , nothing . 1/2 hr later able too start .
Other day I had engines running at dock 1/2 hr testing generator
I keep boat at a marina and boat is pulled and put into cradle when done for wash down
At cradle I flush engines ,
Port engine started up right away & flushed .
Starboard, would not start, Damn was just was running but remember engine was hot
Packed it in went home.
Retuning days later, thinking too myself as I drove too boat, starboard engine should start right up
WRONG- will not. Cranks away , sounds as if it wants too start but nothing
These engines are Volvo 4.3 GXI fuel injected
I am used too a smaller 4 cylinder Mercruiser on my old small boat
. On these twin engines I dont like too work on them virtually no room too work or even view areas.
Has ignition module .
I had extra new gas filter and changed. Gas was clean
I never messed around with fuel injected, fuel rails,
I forgot too mention when I was trying too start I was pumping throttle and back fired real load, with a cloud of smoke coming from rear smelling fuel ?? Flooded
What should I be looking at ? fuse, ? on top Fuel pump is working .
Ignition module is expensive and my thinking is that, I can take the one off the running engine too test . How does one test a ignition module
any ideas what I should be looking at is appreciated
Recent months when engines are hot difficult starting. Have twin 4.3, When cold fires up first turn of key. Other times it fires up even when hot.
Speaking with a tech a working engine is difficult too fix, Vapor lock we are thinking but engine room is cool. Engine temp is normal , thinking gets too hot cause water not cooling fuel cells not fast enough ? Ran a number times with engine hatch open too keep cool
No pattern on which engine would be difficult starting
Start port engine start right away, Turn starboard cranks away , nothing . 1/2 hr later able too start .
Other day I had engines running at dock 1/2 hr testing generator
I keep boat at a marina and boat is pulled and put into cradle when done for wash down
At cradle I flush engines ,
Port engine started up right away & flushed .
Starboard, would not start, Damn was just was running but remember engine was hot
Packed it in went home.
Retuning days later, thinking too myself as I drove too boat, starboard engine should start right up
WRONG- will not. Cranks away , sounds as if it wants too start but nothing
These engines are Volvo 4.3 GXI fuel injected
I am used too a smaller 4 cylinder Mercruiser on my old small boat
. On these twin engines I dont like too work on them virtually no room too work or even view areas.
Has ignition module .
I had extra new gas filter and changed. Gas was clean
I never messed around with fuel injected, fuel rails,
I forgot too mention when I was trying too start I was pumping throttle and back fired real load, with a cloud of smoke coming from rear smelling fuel ?? Flooded
What should I be looking at ? fuse, ? on top Fuel pump is working .
Ignition module is expensive and my thinking is that, I can take the one off the running engine too test . How does one test a ignition module
any ideas what I should be looking at is appreciated