Shwaiger
Recruit
- Joined
- Oct 5, 2021
- Messages
- 5
Hello, boaters!
Have read a lot of related topics, but my problem quite differs.
So I have 2007 Bayliner 192 Discovery with Mercruiser 3.0 TKS (turn key start), serial no: 1a004544, everything is working well, I had a great summer on water, but now, when temperatures tend to +3*C at night and +6*C at a daytime the problem starts: when I start engine cold, it takes 3 cranks to start (after one priming by throttle lever), engine starts, I hear hissing sound of TKS system (enrichment circuit works), but engine runs very rough, bogs down, rpm is around 600, I have to maintain 1500 rpm by working with throttle lever (rpm constantly drops from 1500, I apply more throttle and maintain 1500). When TKS solenoid warms up (it takes ~15 mins now, when outside was +15*C it took ~7-9 mins) hissing sound stops and everything works fine, IDLE rpm is 700, when in gear ~650, boat starts to plane at few seconds, max RPM 4600, speed ~37 mph.
Looks like TKS system works fine – solenoid is retracted when starting engine, after 15 mins it extends and enrichment stops. And the problem is that the mixture is too rich(?) when TKS enrichment works... It's strange, but yes. Carb was rebuilt by me last year, everything was cleaned, issues with rough IDLE have fixed.
(when outside temp was ~15*C, working TKS gave me 900 rpm, then rpm drops to 700 when TKS finishes cycle)
Is it normal TKS operation at cold air temperatures? What should I check? How to make TKS cycle faster? I don't need 15 mins of enrichment, 1 min will be fine).
I have two ideas of fixing it:
1. plug something in hole where air for TKS is taken
2. print on 3d printer own TKS module with arduino and simple solenoid, that will work by simple logic: 1 minute it will be retracted and then extends.
Please, give me your thoughts. Every kind of thoughts )
Sorry for bad english and thank you in advance.
Have read a lot of related topics, but my problem quite differs.
So I have 2007 Bayliner 192 Discovery with Mercruiser 3.0 TKS (turn key start), serial no: 1a004544, everything is working well, I had a great summer on water, but now, when temperatures tend to +3*C at night and +6*C at a daytime the problem starts: when I start engine cold, it takes 3 cranks to start (after one priming by throttle lever), engine starts, I hear hissing sound of TKS system (enrichment circuit works), but engine runs very rough, bogs down, rpm is around 600, I have to maintain 1500 rpm by working with throttle lever (rpm constantly drops from 1500, I apply more throttle and maintain 1500). When TKS solenoid warms up (it takes ~15 mins now, when outside was +15*C it took ~7-9 mins) hissing sound stops and everything works fine, IDLE rpm is 700, when in gear ~650, boat starts to plane at few seconds, max RPM 4600, speed ~37 mph.
Looks like TKS system works fine – solenoid is retracted when starting engine, after 15 mins it extends and enrichment stops. And the problem is that the mixture is too rich(?) when TKS enrichment works... It's strange, but yes. Carb was rebuilt by me last year, everything was cleaned, issues with rough IDLE have fixed.
(when outside temp was ~15*C, working TKS gave me 900 rpm, then rpm drops to 700 when TKS finishes cycle)
Is it normal TKS operation at cold air temperatures? What should I check? How to make TKS cycle faster? I don't need 15 mins of enrichment, 1 min will be fine).
I have two ideas of fixing it:
1. plug something in hole where air for TKS is taken
2. print on 3d printer own TKS module with arduino and simple solenoid, that will work by simple logic: 1 minute it will be retracted and then extends.
Please, give me your thoughts. Every kind of thoughts )
Sorry for bad english and thank you in advance.
