The engine does not crank with plug in,but spins freely with it out.Iam assuming that the valves need adjustment.
121376
Wish everyone would give the engine brand..... 17hp ohv is kinda vague. Check the engine manufacturers website. Either way your gonna have to get a new gasket for the valve cover, have a feeler gauge to check the clearances while you tighten or loosen the rockers. And yes your right, its the valves.
103367
get a second opinion- Sorry a fuse is good or bad - no middle. you have an issue withe the sending unit in the tank - it is a simple but not a cheap part- most of the sending units have an arm that rides up and down with the fuel level- sometimes where the arm rubs against can loose contact and cause a gauge to read empty- or loose ground withe the tank. should be cheaper than 500.00 maybe
652541
bearings/hubs going bad...   or a freewheel problem.  Get thee to your local bike shop and have it inspected!\n\nYou might also have a few loose spokes which should also be checked out (wheel needs to be trued).
409517
The burning of the fuel (chemical) caused the water to turn to steam (heat) which causes the piston to move the rod (mechanical) which moves the engine,\n\nIf you are looking for more in-depth,
219868
Make sure it still have fluid in it and if so it will probably work after a few clicks and probably work by the time you get this answer
585667
If you mean there is spark coming from the coil wire but not the plug wires change the rotor and cap.Or at least give them a good cleaning.\nIf there is 12V to the coil but no spark look for a problem with the kill switch/\nBuy the manual you will need it more and they are cheep on ebay.\n\nhttp://search.ebay.com/search/search.dll?fsop=1&fsoo=1&keyword=on&from=R3&strKw=+mercruiser&siteid=0&satitle=mercruiser+manual&sacat=-1%26catref%3DC6
303280
hey chary chic email me at chevy_ridin_hot_boi@Yahoo.com i may be able to help you with this problem
553614
I have a 1988 Honda Accord with about 137K on it.  It runs wonderfully.  Everything that you've replaced, I have also.  I also had to have my radiator replaced because the guy that owned it before me poured straight water into it instead of a water/coolant mixture, and water in Las Vegas is very hard, so the minerals built up and clogged it.  I would also check your water pump once in a while because I had to replace that as well.  In addition to visual inspection, I would feel all of the belts with my hands just to make sure that they still have teeth on them so that they don't slip off.  The spark plugs were something I had the biggest problem with, but those are easy to replace.
64343
Losing the a/c pump will not gain horsepower if you don,t (it free Wheels when off)turn it on, a/c will draw up to a small % loss even when on\nyou will not notice it, only when you first turn it on the other thing i am thinking about here is you cant guess this stuff over a coumputer, need to see what realy broke !, a smog pump will draw less then 1/4 horse power, a dino will not even pick the up, besides the air pump is there for a reason, it cool combustion temp and ehx temps its a freind to your motor, dont belive otherwise. send photo of damage i will tell you what to do next, p/s that car is plenty fast from the factory, speed kills so keep it stock
73392
more info please. have you made sure you are getting gas to the carb? all the fire in the world cant run an engine with a bad fuel pump or clogged filter. are you getting spark? pull a plug wire and sick a screw driver in it. place the screw driver near the manifold(less than half an inch from it) and turn the engine over. if no spark jumps from screw driver to exhaust manifold you still have a spark issue. if you are getting fire then it should be a fuel issue. if you have both fuel and fire and it turns over but doesnt catch then it gets interesting. also if it turns over but jerks hard you may have the timing out so far it can't catch. eliminate possibilities one at a time and eventually you will eliminate the problem.
582409
As far as reving high, you need carburator adjustment. This may solve the choke problem as well. For the bike kicking into gear by itself, if it is new they will do that until broken in properly but if it is older you need to check the clutch plates as they may be worn and need to be replaced.
656410
An internal combustion engine perhaps?
89160
Could be a good motor. Large displacement modified VWs tend to run hot and could shorten its life.
587203
Sounds like a problem in the hub mechanism. I used to break the pawls inside the freewheel from using too tall of a gear. Replace the freewheel/cassette and then look at learning to spin. Spinning made me faster, saved my knees and I don't break freewheels anymore.
544279
It sounds like you have looked at the most likely sources. \nI think I would definitely try to raise the brushes as the motor is winding down just to eliminate that possibility (wear insulated gloves).  A pencil eraser held lightly on the commutator will also temporarily quiet the brushes. \nDepending on the frequency other possibilities are a loose field pole piece. This could be loose to the frame or the coil could be loose to the pole piece. The same also goes for the armature coils. At 7.5 hp. coils are prone to move around and get noisy. This is more common after overheating. If the bearings are sealed , check that the seal has some lube on it. \nIf it is equipped with a fan check it for clearance and also check where its collar mounts to the armature shaft for looseness and movement. Red dust here is a telltale sign. Depending on how the armature is fixed to the shaft a loose fit here could also cause the chirping. \nA well placed drop of oil on the most unlikely spot may expose the source. More headbanging, some luck and persistence may be required.\n\nI've been there a few times myself. \nGood Luck
67760
here's comaboy calling names again. the stuck egr is a vacuum leak, it's not the exhaust making it die. do me a favor and punch yourself in the face. insulting people over the wire is about as manly as boy george
45803
Are the actuators getting fire?  Maybe you can spray a little WD 40 on the pistons.  Check your leads for corrosion.