PDA

View Full Version : 1997 Prstar 205 w/ 350TBI


Kyle's_prostar205
07-11-2006, 02:24 PM
My 97 PS 205 has the 350TBI engine and I ahve noticed that when I start the engine in the morning it fires right up but as the day goes on there begins to be a little hesittation and it take several more cranks to getthe engine to fire. Anybody have any ideas as to what may be the cause?

Thanks,
Kyle

billr
07-11-2006, 02:34 PM
Is it turning over same as in the morning, or slower? Check your battery and starter connections. As heat builds you have more resistance.

Kyle's_prostar205
07-11-2006, 02:49 PM
It is turning over at the same rate but it just take about 10 seconds to fire as the day goes on. First thing in the morning i just barley turn the key and it fires right up

rektek
07-11-2006, 02:59 PM
Kyle,
need to know if your cranking speed is changed with a hot engine or just longer than normal crank before starting. any misfiring after start up, smoke, smell etc ?
slower cranking think battery, cables, connections, starter.

longer than normal cranking hot think fuel pressure residual drop.

billr
07-11-2006, 04:30 PM
Sounds more like fuel. Try ignition on/off just before starting, to make sure you have enough fuel there.

Kyle's_prostar205
07-11-2006, 04:41 PM
There is no change in speed, It is just more time that I have to hold the key over. I have tryed to cycle the ignition to get more fule into the EFI. I was thinking that it might be a like a vapor lock issue. There is no spoke, unusual noises etc. Just a long crank time. Thanks guys for lending your help!

Kyle's_prostar205
07-11-2006, 04:44 PM
If I add a second battery for all my eletronic accessories how do I tie the second battery into the system. Do I just daisy chain to my other battery? Will that make it a 24V system?

rspiecha
07-11-2006, 04:54 PM
In series makes 24 volts, in parallel makes 12 volts with more current (amps).

Rob

Kyle's_prostar205
07-11-2006, 04:56 PM
Ok this is a really stupid question but how do i install them in parallel?

rspiecha
07-11-2006, 04:58 PM
I know electronics from my electrical engineering classes in college. I don't know this is what you want to do on the boat. Big question is, can the existing wiring handle almost twice the amps???

Rob

rspiecha
07-11-2006, 05:00 PM
I actually had the same problem at first on my boat that you are describing. My fix was to remove the water/fuel seperator (advise of the boat dealer). But I don't think you have one. I think they stopped installing them soon after 1994. My friends 1996 didn't have one.

Rob

Kyle's_prostar205
07-11-2006, 05:01 PM
Yea i believe it can. I have added an Amp, new stereo, VHF radio and some LED interior lights. Plus the boat came with a heater and shower. I have found that with the heater going and If I try and turn on the stereo it cuts out and the same with the VHF radio. My local MC deaker said to try adding a second battery to carry the load of the additional stuff.

Kyle's_prostar205
07-11-2006, 05:02 PM
I have a fuel filter and that is it. I havn't chaged it since I have had the boat (2 years) I was goign to try that as well.

rspiecha
07-11-2006, 05:07 PM
I added a fuel filter in the back on top of the fuel tank to catch debris before going into the fuel pump. The water/fuel seperator acted as a filter also.

Where is your fuel filter???? after the fuel pump??? before??? You might have two.

I now have one before and after the fuel pump.

Rob

Kyle's_prostar205
07-11-2006, 05:13 PM
I appreciate all your help. I will check mine out tonight. I'm still trying to figure out the battery issue. If I link the positive to positive and negitive to negitive will that work to keep it a 12V system?

rspiecha
07-11-2006, 05:16 PM
Yes. Good luck.

Rob

Kyle's_prostar205
07-11-2006, 05:20 PM
I have one that I know of. It is slightly to the rear of my engine. It looks to have threaded ends on the end of the filter. I have not found another one as of yet.

billr
07-11-2006, 06:17 PM
You really need an isolation switch if you have two batteries. Available at any marine supply. It will keep you from damaging your alternator. JimN ???

Kyle's_prostar205
07-11-2006, 06:25 PM
hmm ok...This is kinda confusing now. So do I even hook the second battery to the first or do i need to run a seperat main feed from the alternator for the second battery? Is the swifch like a main disconnect switch? I think Perko makes those.