Chunk

Thanks Ditchcrawler and Boater Sam, I'll limit to 15 seconds and whip out some cable ties

Disconnecting and reconnecting the multi plug has increased the voltage to over 10 at 36 amps and with the circuit fused at 40 amps I guess it couldn't take much more? We'll see if it improves things. One comment I'd make is the multi plug has no latching device to hold it together an isn't exactly a tight fit, also I don't have the manual and can't find the exact one online so unsure of max glow time, maybe someone with a bv1505 could chime in? thanks for the advice

Thanks for the suggestions I'll give them a try today

Hi All, Recently my year 2000 Beta BV1505 has been reluctant to start from cold after giving 15 seconds of glow plug heating, the battery seems ok with good cranking speed. The resistance of each plug is 1.2 ohms which I believe is ok? The voltage measured at the battery drops from 12.7v to 12.1v whilst powering the glow plugs. The voltage measured at the glow plug rail is 8v with a current flow of 24A. The +ve supply comes off the battery connection at the starter through a multi-plug, 40A inline fuse, through the ignition switch, back through the multi-plug to the glow plug heater rail a run of around 5M all in 2.5mm cable. This cable size seems very small, to the point where a 5M run at 30A will drop the calculated voltage by over 2V, in my case nearer 4V? Does anyone have any ideas on increasing the voltage and therefore current flow to the plugs? I could increase the cable size to reduce the volt drop but I guess Beta have limited the current for a reason? But it seems I have lost a couple more volts than I should have. Any ideas would be great thanks

I have re-piped the tanks in series and thinking about it that's the only way it can work properly, who knows why the tanks were in parallel but now the outlet temp of the second cooler is way down at 19c. thanks for the advice

Thanks for the reply Chewbacka, I will look at re-piping in series, my two tanks together would be way over the surface area recommended by Beta but I guess bigger is better?

I'll take it for a cruise and see, thanks for the advice.

I ran the engine again and after a while noticed one skin tank is warming up and the other isn't, the inlet and outlet hoses just tee off to each tank. The hose runs are longer to the tank that is cold and the water outlet tapping is positioned higher up the tank? i have bled the tank numerous times, it looks like the flow is taking the shortest easiest path through one cooler but I don't know if this is how it was before as I didn't check Afer running under light load for around 30 mins I had block temps approx 70c, cooler inlet 50c and outlet 30c with the other cooler inlet and outlet at 19c. i don't know if the higher outlet tapping position on the cold tank is due to the surface area cooling calculation, maybe a few hours cruising will sort things out, but any advice would be great thanks

Tony, thanks for the reply I will try again this morning.

Hi, I have just replaced the old hoses on my keel cooled Beta 38, refilled the system and bled the keel coolers. After running the engine on tick over for a couple of minutes the hoses are still stone cold? It seems like the coolant is not being pumped around the system, presumably the water pump self primes when you refill the system? Is there any way of checking prime on the pump or manually priming it. Thanks