90 massey ferguson firing order

[painthorse2]

Can someone tell me about 90 massey ferguson propane motor? since purchase we haven't been able to find out anything such as firing order. any info would be really appreciated.

[bill50cal]

99.9% of all in line 4 cylinder motors is 1342 and 6 cyl. is 153624

[painthorse2]

thanks for info. can u tell me about adjusting valves on 90 massey propane 4 cylinder motor?

[bill50cal]

I don;t have the lash spec but there is an easy to set them. turn the motor the direction of normal rotation, on each cylinder watch the valves, as the exh fully closes set the intake and as the intake just starts to open set the exh.

thanks for info. can u tell me about adjusting valves on 90 massey propane 4 cylinder motor?

[painthorse2]

thanks for the help. Another ?, which valves are the intake and which valves are exhaust? Any more info regarding the propane 4 cylinder motor would really be appreciated and helpful. i haven't been able to find much about it.

THANKS

[bill50cal]

with out seeing it i will guess it is from front exh,int,int,exh,exh,int,int,exh. you can tell by looking at the exh manifold. if it is like i stated it will have one port at the front one large in the center and one at the rear and the intake will go between the exh ports. this is the most common.

[Dieseltech]

Set intake .016 and exhaust .018 hot.

[painthorse2]

thanks for all the info, but i need more. can someone tell me about propane motors? For example, how much presure from the propane bottle does it take to start the engine? Does it matter how big the bottle is? Any info would be appreciated.

[Dieseltech]

As long as there is fuel in LP tank you will have pressure, but can vary greatly with temperature, 150-200 PSI on a hot day, as low as 30-50 PSI on a cold day. If regulator is working correctly LP carb/mixer will control fuel vapor. Best to start cold engine on vapor valve first, then turn on liquid valve when warmed up, turn vapor valve off when warm. Can run on vapor only but will not have full power when needed, may frost over tank as pressure drops when pulling hard on vapor valve. This applies to all tank sizes. Find a copy of owners manual, will explain best way to operate your model.

[painthorse2]

Thanks so much for info. We have engine running!!! Of course now i have another problem. The PTO seal in the back is leaking. Can u give me any suggestions or info on repair or replacement?