01 honda civic timing belt replaced no start

[forcefan97]

On a 01 Honda Civic w/ 260 k miles , timing belt broke. Installed nu belt and aligned timing marks. Engine wont fire up & theres spark and injection. Any thoughts ?

[inafogg]

hello have you done a compression test

[forcefan97]

Originally Posted by inafogg

hello have you done a compression test

yes i have & there is zero compression on all 4 cyl..

[UncleBob]

either the timing is off, or you bent valves on all of the cylinders. The latter is likely regardless to the former, unfortunately. Honda's almost never survive a broken belt

[curtis73]

what happened is that the valves stopped but the engine didn't. The pistons slammed into the valves and bent/destroyed them.

If you're lucky you just need new valves in a rebuilt head. If you're not lucky, you need pistons, rods, valves, and a host of other stuff. Sorry for the bad news, but I think you'll find that its not pretty in there.

[forcefan97]

Originally Posted by UncleBob

either the timing is off, or you bent valves on all of the cylinders. The latter is likely regardless to the former, unfortunately. Honda's almost never survive a broken belt

Thanks for the reply. The timing marks are dead nuts.Ill remove the head and see whats up.

[forcefan97]

Originally Posted by curtis73

what happened is that the valves stopped but the engine didn't. The pistons slammed into the valves and bent/destroyed them.

If you're lucky you just need new valves in a rebuilt head. If you're not lucky, you need pistons, rods, valves, and a host of other stuff. Sorry for the bad news, but I think you'll find that its not pretty in there.

Well , dudes the head is off and no signs of holes in the pistons. I did notice on 1 of the cyl on the head that both intake & exhaust valves were open at the same time.

[curtis73]

That is probably normal. The cam is designed with overlap. The intake valve is supposed to start opening before the exhaust valve completely shuts.

It doesn't take much bend to make a valve not seal. Its good to hear that things aren't completely munched. The last Honda I repaired we just ended up putting a rebuilt engine it was so bad.

[forcefan97]

Originally Posted by curtis73

That is probably normal. The cam is designed with overlap. The intake valve is supposed to start opening before the exhaust valve completely shuts.

It doesn't take much bend to make a valve not seal. Its good to hear that things aren't completely munched. The last Honda I repaired we just ended up putting a rebuilt engine it was so bad.

The cam is off the head and i noticed that some of the valves arent shut . The head is at a head shop .

[curtis73]

Sounds like you got lucky. Congrats. Keep us updated!

[forcefan97]

Originally Posted by curtis73

Sounds like you got lucky. Congrats. Keep us updated!

Rodger Dodger ! Thanks for the help .

[inafogg]

hello before you go & put any $$ in the head.keep in mind that the valve job your going to need is going to seal the upper end of the engine.now with the miles on engine its going to put more stress on the lower end.you will probolly start seeing alot more oil usage being the rings ect. are all high mileage.its not always the case but some thing to expect.good luck

[forcefan97]

Originally Posted by inafogg

hello before you go & put any $$ in the head.keep in mind that the valve job your going to need is going to seal the upper end of the engine.now with the miles on engine its going to put more stress on the lower end.you will probolly start seeing alot more oil usage being the rings ect. are all high mileage.its not always the case but some thing to expect.good luck

Good point! Might as well get a used engine . The top end is rebuilt , but the lower end is not.

[UncleBob]

I wouldn't pre-emptively put a motor in it.

if it ain't broke, dont' fix it!

honda's are some of the best engines out there. It might be tired, but that doesn't mean its *needed*

[forcefan97]

Originally Posted by UncleBob

I wouldn't pre-emptively put a motor in it.

if it ain't broke, dont' fix it!

honda's are some of the best engines out there. It might be tired, but that doesn't mean its *needed*

Hondas are pretty good cars , wish they had timing chains. Well the shop found some worn out and damaged valves & some other stuff , so the head is getting rebuilt. Lesson to be learned , change the timing belt every 90/ 100k .