So I recently broke my timing belt, and it's currently sitting at the mechanic's shop being worked on. He called me about 15 minutes ago and he told me that he got everything put back on, but the engine will not turn over. Does anyone know if perhaps there is some time of sensor that could have disabled the engine from firing after breaking a timing belt? Could my after-market alarm have something to do with this? Best answer gets 10 big ones!
2007-06-20 05:10:43 · 12 answers · asked by racin4slips 3 in Cars & Transportation ➔ Maintenance & Repairs
If you have the zero clearance motor, and the timing belt broke, you may have a broken valve or piston, and an frozen motor. He's the mechanic, didn't he put a wrench on it to see if it will turn by hand? Sounds like you may need to find a mechanic with a little more common sense to be able to get you running again.
No, there is generally no sensor which will stop a car from running because a component breaks, and no, the alarm shouldn't have it shut down unless the mechanic did something to make the alarm think the vehicle was being stolen, in which case it would be on him to reset it.
2007-06-20 05:18:11 · answer #1 · answered by oklatom 7 · 1⤊ 1⤋
Some engines, particularly Japanese makes use what is called zero clearance valve timing.
This means that the valve should be at the open position at a specific time during the engine rotation or the valve will collide with the piston.
When this type engine breaks a timing belt, the piston collides with the valve causing serious damage to the cylinder head, valve(s), and piston. A valve could be completely broken off and jamming the piston.
Sounds like your problems are much more serious than a bad timing belt. You may need a new cylinder head assembly, piston, and if it damaged the cylinder wall, a complete engine.
Your mechanic should have checked for this BEFORE he installed the timing belt.
Sorry for the bad news
2007-06-20 05:24:04 · answer #2 · answered by Mad Jack 7 · 1⤊ 0⤋
The timing belt/chain is interior the engine. If the distributor won't turn collectively as you're cranking the engine, it is assured that your timing belt has broken. The starter turns the crankshaft which in turn turns the accessory belt which in turn turns the upload-ons (AC, alternator, playstation pump, etc). The distributor is grew to become by utilising the cam shaft this is grew to become by utilising the timing belt via the crankshaft (separate kit on the crankshaft). So, if the distributor turns, your timing belt isn't broken. you have a distinctive ignition subject or gasoline delivery subject.
2016-11-07 00:57:02 · answer #3 · answered by ? 4 · 0⤊ 0⤋
This sounds pretty ugly. Your mechanic is an idiot. When a timing belt breaks, your camshaft is no longer turning and the valves are stopped in whatever position they happened to be in, but the pistons keep moving up and down and BAM! a piston hits an open valve and bends the valve, and/or damages the piston also. There are certain engine designs in which this kind of damage can't happen, you didn't say what kind of car this is, but yours isn't one of those.
The head has to be removed so the damage can be assessed. it may be as simple as replacing a valve or two or the head may be toast.
Lesson learned here? The manufacturer tells you to replace the timing belt at certain intervals for a good reason.
2007-06-20 05:28:12 · answer #4 · answered by Anonymous · 2⤊ 0⤋
Need more info; What kind of car/engine. Does the alarm/security system disable the engine? Does the engine crank, or will it turn by hand?
If its an overhead valve engine and a timing belt breaks you could lock up the engine by valves hitting piston.
Sorry, not enough info.
2007-06-20 05:18:08 · answer #5 · answered by Anonymous · 1⤊ 0⤋
I think you better sit down for this one! There is a good chance that your engine has bent valves. I'm surprised that that your mechanic did'nt tell you that this was a possibility. This is the reason that the manufacturer recommends replacing the timing belt after so many miles. I hope that I'm wrong because this is a very expensive repair!
2007-06-20 05:22:11 · answer #6 · answered by extracheese2 2 · 2⤊ 0⤋
If the mechanic actually repaired the engine problem it could very well be your alarm thats causing the problems. Most alarms have a starter interrupt. Tell him to arm then disarm the alarm and try it again.
If its like most mechanics the alarm probably went off when they reconnected the battery and they either cut the siren wire or let it go off untill it gave up and the alarm is still armed keeping the car from starting.
2007-06-20 05:24:51 · answer #7 · answered by kb 3 · 0⤊ 1⤋
Your mechanic should've known this well before putting the belt on. He had to turn the engine by hand to get it to TDC which is necessary for putting the belt on in the right place. Maybe he has no idea what he's doing?
2007-06-20 05:20:31 · answer #8 · answered by Ferret 4 · 1⤊ 0⤋
You can seize the engine when the timing belt breaks. You may be in serious trouble... Sorry.
2007-06-20 05:14:05 · answer #9 · answered by vinster82 5 · 3⤊ 1⤋
If you mechanic doesn't know the answer to this, you need a new mechanic.
2007-06-20 05:14:04 · answer #10 · answered by MOM KNOWS EVERYTHING 7 · 2⤊ 0⤋