I broke the gun...i need to replace the entire gun on a Honda GCV 160 5.5 hp...

Tom, NGK BRP6ES ,Champion RN9YC,Torch F6RTC are replacement sparkplugs for Honda GCV 160 pressure washer engine. This info should be in your pressure washer engine manual. Check the attached links,instruction and guides, Good luck
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http://www.bsppwebtools.com/data/manuals/020296_0esAw.pdf
Troy Bilt 020296 Pressure Washer Relacement Parts
Spark plug cross reference

its not going to matter if the seal is leaking damage alreay done to it run it till it stops or lockes up

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here is the link for the honda GCV160 engine. http://lawnandgarden.manualsonline.com/manuals/mfg/honda_1_2/gcv160_2.html
There must be another model number for the pressure washer. Check the pressure washer again and search that model on manualsonline.com

MiTM will have that. See mitm.com Honda makes the motor but not the pressure washer. Honda does have manuals if you need one for that GCV160 motor.

.006in on the Intake and .008in for theExhaust + or - .002in

sounds like there is a valve hanging up inside the pump

Try this website at http://forums2.gardenweb.com/forums/load/lmower/msg0312290415003.html

Mine is doing the same damn thing! Trying to figure out how to take off the high-pressure hose connector because I need to inspect it for clogs.

Hi , I think you need someone to remind you these engins are not made by god and they work by obeying three simple rules ,
1.Spark , Can you see a very good blue spark
2.compression,,can you feel strong compression ,
3.fuel , is the right amount of fuel getting in , is the air mixture good ,

Now try these things

Find the manual and PROPPER set the gap in the spark plug ,
clean and check the air filter ,
remove all fuel and replace with brand new,
check the fuel filter,even in the tank tap?
undo the screw at the carb bowl , can you see petrol leaking ,

If everything checks out then try this to get it started,,

spray "easystart" in the carb , bypassing the air filter ,
if it wants to start but cant for long then its a carb problem
check float hight , float needle,jets and pins ,too much air getting in

find someone thats good on motorbikes , They like me know all the tricks to get things to start ,

should be a honda gcv 160 5,5 horsepower engine.

do a search for honda engine carburretor adjustment, plenty of pages on the internet detailing how to adjust carbs, mixture etc.

Excell Pressure Washer Model VR2522 Replacement Parts repair kits ...
lok at this site , parts breakdown of engine etc