iammarcuse
Member
Hi All
I have a 1998 GTX RFI with original fuel injected 787 motor. Model number is 5666. This spring when I went to fire it up the motor it was hydrolocked with injector oil in the cylinders. I blow the oil out by removing the plugs and then the thing started right up. After I killed all the mosquitoes in the neighbourhood with my seadoo fogging machine it started running clean and has run fine all summer. I still do notice a little white smoke for a few minutes at start up after it as been sitting for a few days.
I don't know if i just have a check valve leaking down over the winter or whether you guys think I have bad crank seals leaking into the case from the rotary valve housing. I am trying to decide what to do. Nothing? Some Stop Leak in RV housing? New crank seals? New crank?
I have read some guys saying it is rotary valve seals. Except when I look at the manual it looks like the seals are on the crank. The RV shaft seals look like they prevent external leaks. I have the basic skills to pull the motor and dig in but I really would like to know which way I should be going with this. I do want that kind of work if I am not addressing the real problem. I am not clear whether changing the seals is a doable option without special tools or if I am better off doing the whole crank? And then would one do pistons if you have to split the thing open? I would love to think I could just replace a check valve or fill the RV with Stop Leak. ( I know it will not stay in there but it would likely have a chance to treat the seals before it mixed in with the injector oil.) I could also just use hose pinchers over the winter to prevent the leak down. Not sure what to do.
Any insight would be appreciated.
I have a 1998 GTX RFI with original fuel injected 787 motor. Model number is 5666. This spring when I went to fire it up the motor it was hydrolocked with injector oil in the cylinders. I blow the oil out by removing the plugs and then the thing started right up. After I killed all the mosquitoes in the neighbourhood with my seadoo fogging machine it started running clean and has run fine all summer. I still do notice a little white smoke for a few minutes at start up after it as been sitting for a few days.
I don't know if i just have a check valve leaking down over the winter or whether you guys think I have bad crank seals leaking into the case from the rotary valve housing. I am trying to decide what to do. Nothing? Some Stop Leak in RV housing? New crank seals? New crank?
I have read some guys saying it is rotary valve seals. Except when I look at the manual it looks like the seals are on the crank. The RV shaft seals look like they prevent external leaks. I have the basic skills to pull the motor and dig in but I really would like to know which way I should be going with this. I do want that kind of work if I am not addressing the real problem. I am not clear whether changing the seals is a doable option without special tools or if I am better off doing the whole crank? And then would one do pistons if you have to split the thing open? I would love to think I could just replace a check valve or fill the RV with Stop Leak. ( I know it will not stay in there but it would likely have a chance to treat the seals before it mixed in with the injector oil.) I could also just use hose pinchers over the winter to prevent the leak down. Not sure what to do.
Any insight would be appreciated.
