Hello,
I've been trying to resolve a warm start problem with my 2011 3.0 TKS. Here is the initial problem: hard start when run until warm (30 min) and then off for a while - hard to start but always starts. Last two times out trying to troubleshoot and now it hardly runs at low RPM, starts okay but need to keep RPM 1,500 to 2,000 to keep it running when warm.
I've done all the troubleshooting in the Merc. #41 service manual. I've bench tested the TKS module last year and it extended as per spec but a little slow. TKS module resistance was to spec. Bench tested the temperature switch and it responds as per spec. Have not been able to check the oil pressure switch when running, checks okay not running.
Had various results when trying to check things when running and when not running when warm.
As a last resort I checked the load on the TKS module by sticking a multi meter in line an found it was drawing about 0.375 Amps consistently. This tells me that the electrical circuit is operating correctly.
I'm planning to pull the TKS unit again tomorrow and check it out again. The only other thing I can think of is to spray carb cleaner into the TKS barrel on the carb.
The only thing I can think of is that the TKS plunder is getting stuck and not closing the fuel supply.
Any ideas as to what is is or what else to do?
Thanks in advance.....
I've been trying to resolve a warm start problem with my 2011 3.0 TKS. Here is the initial problem: hard start when run until warm (30 min) and then off for a while - hard to start but always starts. Last two times out trying to troubleshoot and now it hardly runs at low RPM, starts okay but need to keep RPM 1,500 to 2,000 to keep it running when warm.
I've done all the troubleshooting in the Merc. #41 service manual. I've bench tested the TKS module last year and it extended as per spec but a little slow. TKS module resistance was to spec. Bench tested the temperature switch and it responds as per spec. Have not been able to check the oil pressure switch when running, checks okay not running.
Had various results when trying to check things when running and when not running when warm.
As a last resort I checked the load on the TKS module by sticking a multi meter in line an found it was drawing about 0.375 Amps consistently. This tells me that the electrical circuit is operating correctly.
I'm planning to pull the TKS unit again tomorrow and check it out again. The only other thing I can think of is to spray carb cleaner into the TKS barrel on the carb.
The only thing I can think of is that the TKS plunder is getting stuck and not closing the fuel supply.
Any ideas as to what is is or what else to do?
Thanks in advance.....
