on a trip. car broke down took engine apart found camshaft broke in half.replace shaft car run for 3 weeks. shaft broke again replace 2nd time car run for 2 weeks broke 3rd time change 3rd time afraid to drive car please help thanks.
2006-09-05 22:53:20 · 24 answers · asked by jm757va 1 in Cars & Transportation ➔ Maintenance & Repairs
it's a 94 dodge spirit 2.5L 4cyl over head cam. bearings ok, oil pump ok, had a major tuneup. replace timing belt,timing ok,lifter,rockers etc.ok.compression test ok.one more thing when car is on at idle it shake's replace motor mounts still shake's replace lot's of parts on vehicle please please please help thank a bunch.has 98,000 miles on it.
2006-09-06 02:19:43 · update #1
if you really do like the car just get a new or refurbished engine, much cheaper than the cost and labour of 3 camshafts!
2006-09-05 23:32:54 · answer #1 · answered by Istiaque Choudhury, BEng (Hons) 4 · 0⤊ 0⤋
Man, if your snapping a cam in two, that is CRAZY!!! I can think of a couple things... First is that you have the wrong clearance between the piston and the valve, which causes the piston to contact the valve, pushing it into the cam and breaking it, although you would probably have a broken piston too.... Your harmonic balancer or balance shafts may be out of whack, which is causing excessive distortion in the reciprocating assembly. This is esp true if the engine is vibrating excessively You might want to get some plasti-guage and check the clearance between the cam saddles and the cam. check that you are not running undersize bearings, which leaves alot of slop on the cam.
2006-09-13 18:19:29 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well, this sounds expensive. Have the cam bearings been checked? If it is overhead cam, maybe the cylinder is warped causing excessive stress to the cam. Check the rest of the valve train as well....lifters, rockers, push rods etc as there is obviously something putting excessive load on the camshaft.
It's no good to just keep replacing parts - they break for a REASON.
2006-09-05 22:58:42 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The engine has to be torn down completely and you probably have a plugged oil passage starving that one part of the cam shaft from lubrication causing it to seize and break in half. Some motors have oil passages thru the caps that hold down the cam and if you mix the caps up, you will not have oil lubrication.
2006-09-13 18:48:46 · answer #4 · answered by oneradnursey 3 · 0⤊ 0⤋
oh boy talk about projects huh..okay ..the vibration you stated did you find out where is it coming from? crank?torque convereter?warped or crack flex plate.try this remove every thing to gain access to the timing belt.rig something for the timing gear so you can start the veh.with out the crank pulley on the veh.start and check the timing gear to see if the cranks warped.when timing belt was set, and if crank or gear,cam sprocket is not warped.when the motor is spun the tension that is already on the t-belt will even get more tighter.the tighter the belt the more strain on the cam sprocket
2006-09-11 23:18:38 · answer #5 · answered by lani boy 1 · 0⤊ 0⤋
Take the cylinder head off, and take it to a machine shop. Also take the cam you are going to install into the engine, and have it spec ed out for bearing fit. Warped valves is what your problem is probably, as this would explain the rough idle thing. Good Luck!
2006-09-10 12:21:38 · answer #6 · answered by Anonymous · 1⤊ 0⤋
the only way to repair the problem is to replace the head... im sorry to say but the cam bearings are machined into the head so whats probably happening is the bearing surfaces are so badly worn that they keep eating the cam journals and causing the Cam to seize up and break... be carefull not to cause the engine to lock up...those engines are garbage anyway.but that's the only engine for that car ..so good luck
2006-09-13 17:22:20 · answer #7 · answered by ? 2 · 0⤊ 0⤋
i think you have a valve that is sticking and when the cam tries to open that valve stuff breaks. Get a whole new engine. Engine balancers may be out of sync or broken also. The sticking valve causes a misfire and that in-turn causes the engine to shake.
2006-09-13 12:03:26 · answer #8 · answered by Anonymous · 0⤊ 0⤋
I can never get over how people will answer these questions without the faintest idea of what they are talking about.
For the record, I agree with Firefightingexpert, and I have a question for HIM!!:
At this point, does it pay to keep dicking around with this motor, or just get a new one (motor or car lol).
2006-09-11 09:01:52 · answer #9 · answered by MALIBU93 2 · 0⤊ 0⤋
assuming the car ran hot on you. sounds to me you warped the head from excessive heat. and this will put your camshaft in a bind. ifso then you need to replace the head and all . come out cheaper in the long run. even better have a used motor installed in it. that way you have a warranty.
2006-09-11 14:20:07 · answer #10 · answered by duc602 7 · 1⤊ 0⤋