Engine will not start

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babzog

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Have a Honda gc160 that now won't start. Used to blow a bit of blue smoke after a cold start but now won't start at all. Removed plug and it looked like it was soaked in what seemed to be oil. Cleaned it up and pulled the rope a few times... Lots of spark. Has gas and I'd just cleaned the carb a couple weeks ago. Ideas as to what could be wrong?
 

Doc Sprocket

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The rings might be done. Do you have a compression tester?

Take out the spark plug and shoot a teaspoon of fuel directly into the hole. Reinstall plug, and attempt to start. Results?
 

babzog

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Sorry fo the delay in responding, was focused on getting the woodpile in order. Pulled the engine and opened it up Sat. Found the problem:

blownmotor.jpg

Looks like the intake valve departed somehow (how?!?), dropped into the cyl, punched up through the head nr the spark plug, dropped down again, then punched up a second time and lodged where you see. Motor still turns over freely, but I guess this explains why I have low compression. LOL

Called around looking for a used motor but noone I could think of (incl kijiji) had one. Picked up a new 7hp chonda from Princess Auto Sat afternoon ($130 + tax) and spent the rest of the day cleaning up the engine area, mounting the new and MacGyvering a solution for remote throttle linkage. Was more of a challenge than I thought since it all had to fit under the air cleaner... first couple of attempts didn't end up fitting underneath. Ended up welding a nut to the head of a bolt and securing in a conveniently placed hole in order to hold the throttle cable (took the old screw-in type cable end off the old motor), then looped the cable through a hole in the throttle arm and fastened in place with a removable ferrule. Made the old throttle return spring shorter to complete the assembly. Didn't get a pic after (I know, I know, will try to get one tonight). You'd think the remote throttle linkage bits would be included but I suppose that's one way they cut costs.
 

babzog

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As promised, a pic of the new linkage. Seems to work but definately not what I would have preferred (esp. when the manual pics show that the optional linkage kit is so simple).

linkage.jpg
 

babzog

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I've showed a few folks who've been around engines a long time, or who've worked on them professionally. All have said much the same... never seen that before.
 
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