Will crank and sometimes start lol
 

Needing some help on figuring out an issue with my 02 S2k. So engine was rebuilt and after installing it’s been giving me starting issues. So I’ve narrowed the problem down to the #2 cam sensor. Although it is new I backprobes my scope in it and it gives me a weak signal. So I looked under the valve cover, and there are dings or dents on the cam. My theory was that there’s a short somewhere in the harness. So I ran two wires from the straight to the ecm and still no start. The only way I can get it to run is if unplug the sensor. And then it will actually fire up. Any feedback is appreciated thanks in advance.
worth noting that coils are new spark plugs are new cam sensors are new, timing components are new and align perfectly.

!QUOTE=cedo;25048223]So I looked under the valve cover, and there are dings or dents on the cam.[/QUOTE]

This doesn't sound good. Do you have photos of these dents?

Thanks!

Sorry that actually a typo cams are good no dings or dents

Sorry that actually a typo cams are good no dings or dents[/QUOTE]
So there are no dings and dents --- on anything?

Yeah, like how do you typo dents and dings?

I meant to type “no dings or dents” I missed one word my friend. Hooked my scanner up and upon cranking noticed spark advance is at -10 degrees. All timing marks line up perfectly and timing components are new. I feel like I’ve been going in circles with this issue.

Have you driven it with newly rebuilt engine,or have been ?

no the car hasn’t been driven I’ve got it to start a few times but that’s it.

hope you have tried swapping cam sensor plugs ?

Camshafts/cam Gear oriented properly? Timing marks ok?

https://cimg5.ibsrv.net/gimg/www.s2k...abdd56548.jpeg
https://cimg3.ibsrv.net/gimg/www.s2k...3b58cf9e1d.jpg
This is how the timing sits currently

no I haven’t I’ll try it and see what happens although if that does anything I’d be surprised

had mine wrong way round :rolleyes:

cams are correct inlet /exhaust & timing correct :thumbup:

Also I think it’s worth mentioning before anyone suggests it. The ground point on the back of the head has been cleaned and is good. The only other ground points I know are on the lower driver side of the block.

is it spitting back when trying ? can you film it and post it up ?

Any chance it's the ECU itself?

I have two no change.

I will film it tomorrow. But what if it is or it isn’t what would that indicate ?

Will give people an idea by sound,inc compression, timing,battery condition,fuel & spark, so if its trying to start ect ect..

T
https://cimg1.ibsrv.net/gimg/www.s2k...7c92ac6d56.jpg
his was my issue thank you to all who contributed

Intake cam sprocket pin split, seizing the sprocket in a position that was slightly off. I should be able to change the cam and sprocket and the car should start right up.

That's definitely a problem! Glad you finally found it.

How does something like this happen?

Thanks!

I'm wondering the same thing. Maybe it happened when someone tried to force it out during uninstall :ponder:

Another "hammer mechanic's" dirty deed!

https://cimg0.ibsrv.net/gimg/www.s2k...3181edf4bf.gif

I suspect an offset wood ruff key timing adjustment modification failure..:melodramatic:
it may have marking on it ?

Those were the original cams that were on the block that threw a rod. I’m think mid high rev engine locked up and broke the pin. And I’ve also read oil starvation from a dirty vtec screen. But I’m glad I found it. Just got cams in and now I’m running into a different issue. Where the #1 cam cap just snapped. if anyone has any clue on how to deal with this without changing the head on my newly built engine that would be great
https://cimg7.ibsrv.net/gimg/www.s2k...035f2bc8d.jpeg
https://cimg8.ibsrv.net/gimg/www.s2k...74ee946d6.jpeg

That may need line boring,have you another to put in ?
Have you checked for bent camshaft ?

can’t find caps anywhere if anyone has a set to sell that would be great

Location ?

You need a new set of cam caps.
Make sure sure you back out the valve adjustment bolts before you torque down the new caps.

Thats the best option :thumbup: how much are they ?

DFW, Texas

It's nice how the engine is designed to have that aluminum cam holder break before the cam does. :thumbup:

Camshafts are much easier to come by however.

I'd imagine that you'd be buying a lot more parts if the engine was allowed to break the camshaft(s).

If anyone knows where I can get some caps that would be great. Found one guy but it looks like he quit replying. So if anyone knows where to look please let me know.

I have but in UK,not cost effective tbh .search Billman TCT in USA

Post here: https://www.s2ki.com/forums/want-buy-132/

Whoa! Get a new set of cam caps (they're matched from factory so buy the full matched set). Get new bolts if any are stretched or look suspect. You need to hand tighten each bolt in sequence (check service manual). The sequence is CRUCIAL! Then you need to start at a low torque setting like 6 ft lbs and work your up to 16 ft lbs (can't remember final torque but its around this figure). Aim to torque them all down in 3 to 4 passes. Turn the engine by hand to ensure the cams spin freely and nothing binds. And like Flanders said above, loosen your adjustment screws first.

honda sells just the caps ?

Yes

Out of luck the dealer doenet have anything except a complete Head. If anyone in the US has something that would be great.

Dammit... try Amayama Japan. They sell OEM parts.

It's not just the caps the lower journals are matched to the caps. You need the whole set, or you risk siezing the camshaft.

It's possible to get away with it, but it's also possible you ruin the head.

Forgot lower is not part of the head :rolleyes:

THIS. Exactly what I said above. Matched set means the bottom and top have been matched together (like cool high performance gaming computer RAM ;))
OP might be in for quite an expensive purchase :feint:

https://www.ebay.com/itm/16636369083...mis&media=COPY

Just popped up. Hopefully you can get this resolved OP.

Luckily I found some came in two weeks ago, but my shop has been swamped so I haven’t been able to put them in. Paid way less too for a set that looks much cleaner with cams and bolts a long with it. I got 2 good sets of cams I’ll probably just end up selling them when it’s all said and done. Thanks for the link