formariz 12,019 #1 Posted December 2, 2014 (edited) So today I was going to use the swamp rat to haul the lawn furniture into storage. It has been sitting gor a couple of weeks but it always starts right up. This time just very white smoke comes out of exhaust ( this never happened before ) and nothing . It has very strong spark as always. Drained entire fuel system thinking water in there from crappy gas. Still nothing. Occasionally while cranking I hear a metallic tap coming from valve train area. Is it possible that it "dropped" a valve from a broken spring? Edited December 2, 2014 by formariz Share this post Link to post Share on other sites
Mr. 856 170 #2 Posted December 3, 2014 easy way to tell would be pull the head. I don't think valve springs break often do they? Share this post Link to post Share on other sites
formariz 12,019 #3 Posted December 3, 2014 This is an engine with less than 100 hours on it. If I can't start it I am going to have to pull it out to open it . Bummer. Share this post Link to post Share on other sites
Mr. 856 170 #4 Posted December 3, 2014 Can you feel anything doing a "thumb test" through the plug hole? Share this post Link to post Share on other sites
formariz 12,019 #5 Posted December 3, 2014 Not going to be easy to get my finger in there . It's on a rj with an eighty five pound weight attached to the inside of hood. It's actually easier to remove engine than to remove hood. Share this post Link to post Share on other sites
woodchuckfarmer 333 #6 Posted December 3, 2014 Pull the breather and take a look in there....Wayne Share this post Link to post Share on other sites
WH nut 553 #7 Posted December 3, 2014 Change the spark plug Share this post Link to post Share on other sites
formariz 12,019 #8 Posted December 3, 2014 Change the spark plug Did that too. Strong spark but still no ignition! Share this post Link to post Share on other sites
Mr. 856 170 #9 Posted December 3, 2014 If you have good spark and fuel then its time to move on. As mentioned pull the valve cover and take a peak. Any chance the flywheel sheared the key and now your timing is off? Share this post Link to post Share on other sites
formariz 12,019 #10 Posted December 3, 2014 (edited) Unlikely but anything is possible. I am leaning towards a valve issue because of occasional metallic ping coming from valve area while cranking. Once I assemble this transmission I am working on I am going to pull engine and see what's going on. Edited December 3, 2014 by formariz Share this post Link to post Share on other sites
buckrancher 2,694 #11 Posted December 4, 2014 could be as simple as a valve keeper came off Share this post Link to post Share on other sites
formariz 12,019 #12 Posted February 19, 2015 Update on this one. Still a little puzzeled about it but its working. Second spark plug I tried had spark but tractor still wouldn't start. When out and got a third spark plug, put it in and started right up like nothing happened. I don't know what was up with the first two spark plugs. Share this post Link to post Share on other sites
slammer302 2,156 #13 Posted February 19, 2015 I have hh60 did the same thing I guess its picky about its spark plugs Share this post Link to post Share on other sites
Don1977 604 #14 Posted February 27, 2015 You can have spark out in the open and none when under compression with some plugs. I would say you got some bad plugs. 1 Share this post Link to post Share on other sites
