Im stumped and cant get car to start its a KA24E ..........

[mac2686]

Ok searched the forums cant find any thing quite to helpful... so here the deal! I jumped my timing so me and my dad decided to replace the timing chain our selves and save some money so we took it all off put new sprockes in tensioner guides the whole kit .what had happened was the tensioners broke and the chain was loose and just sliding over the sprokets any ways we set the timing correctly like chiltons said to in the book then we put all new gasket in and all that good stuff finally had everything back together! then i tried starting and nanana it turned over but didnt start i was soo pissed so we thought and then relize we didnt set the oil pump or distrubuter so we took both out then reset timing tdc then put them in the right way then made sure all spark plugs were correct then once again i went to fire it up and it just turned over and now were both reallly stumped and need some serious help cuz its getting very old and frustrating so PLEEEEASSSSSSSE HELP!!! thanks

[Red coupe]

did you replace the valves? check your compression when the chain broke the piston might have bent/broke them...

[mac2686]

i pretty sure i didnt break or bend a valve because when it went it didnt sound like it and my dad says we be able to tell if they were bent when it turns over ... athough i guess it wouldnt hurt to try a compression test if that then man were really sol ... i hope its not that

[SlidnSideways]

If you have fuel and spark and your certain that timing is correct then you must not have compression. The same thing happened to me and i gave my car a complete tune-up as well as replaced the timing chain.

Put your finger in a spark plug hole to see if you have compression. Your finger should be forced from the hole. If not im betting its a valve. When i threw my timing i was jumping on the highway catching up to someone and went close to redlining third and hit 2nd instead of 4th. Bent damn near every exhaust valve and dented the hell outta my pistons.

In short....Check your compression...If you have no pressure...its probably valves. Lemme know how it turns out.

--Tim--

[mac2686]

well I guess didnt hurt to take you guys advice because you were both right which really SUXS there only compression in one of the four spark plugs! sad sad sad.... so now me and my dad our wondering if we can do this ... my dad is wondering if its worth it b/c he said what if the pistons and rings are bad too then thats alotta work and so heres my proposal to you I have 1700 saved up the cars primed before i jumped timing i :was" going to have it painted now thats kinda of a ? do you guys think that replacing just the valves will do the job or is going to need alot more if so I have a ka24de in the garage it was for my future plans of building it up later down the road do you think i should just fix the valves or scrap the engine and go ahead and put the de in?? I need some smart peoples help here thanxs!

[BigLeeRoy EngineBuilda]

take the head off and asses the damage. i bought an engine that had a broke timing chain. well rebuilt the bottom end(wont go into that list of stuff). Well check this out put the head back on there and did a dry compression test (spinning the engine with a breaker bar.) this wont tell you much i would suggest doing it in the car like you did. now what i found was the number 4 cylinder wasnt holding compression. the original pistons had marks in them where the valves hit but didnt break. well i tore the head apart and started resurfacing the valve seats. well on the number 4 cylinder the exhuast valve and just one of th intake valves wouldnt grind smooth. what had happened was 2 of the valves had actually been bent but not enough to see with the naked eye. so replaced those two valves, and i am 4000 miles into my ka with now problems. need some more info hit me up at [email protected]

[mac2686]

so your sayin replace the valves ehh? ... is it ne harder than doing the timing chain?

[BigLeeRoy EngineBuilda]

no dont replace the valves. i said assess the situation. this is what i would do. take the head off, order new stock head gasket, lap the valves, yank out the pistons and rehone your clyinders, replace the piston rings with more oem ones.out it back together it should be ready to roll. this is only what i would do though. wont cost much money just time. a good weekend job though. your valves maybe alright, just make sure when you lap them the valve seat and the valve itself has a smooth surface. got any more questions lemme know. peace^^

[SlowBack]

Speaking from experience, I know it sucks. I just got my car running again after 3 weeks of fixing a bent valve from bad timing problem.

The best thing to do is to get another used motor. They're not too expensive because people are always swaping in the SR20 engine and want to get rid of the KA. I sold a KA24E with alternator, pwr steering, manifolds, injectors, and other stuff for $125 not too long ago (too bad I didn't have it when I needed it).

While the new (used) motor is out, throw on your new timing stuff and whatever other new things you have from your current motor.

If you need gaskets or anything, check out HM Performance, I got what I needed from them shipped for less than the lowest ebay prices before shipping. http://shop.store.yahoo.com/hm-performance/

Also, if you decide to try to salvage the existing motor, you're gonna need valves that aren't bent. You can't just lap bent valves, they're still bent and won't travel through the guide properly. Make sure you lap the new valves though if you are salvaging your current engine (this ensures a good seal for both the head and valve surfaces).

Again, I suggest going with another full running engine with your new parts installed on it. It's not nearly as hard to do as rebuilding your current engine.

Also, make sure you crank by hand first (with the neg batt cable removed and all that good stuff). Do this for at least 4 revolutions to make sure that none of the valves and pistons aren't going to interfere.

Good luck and let me know if I can answer any other questions,

Matt

[tiger]

wow leroy we meet again in another forum...

[mac2686]

Ok I see what your saying now I have a question. I hope I dont sound to stupid but what does it mean to lap the valves? Ya I def. think im going to asses the situation for now and see what im dealing with and ask questions as I go along. My only worry is taking the pistons out, I hope it s not too hard I just want to be able to complete this task... im sure ill learn alot though

[SlowBack]

You will most certainly learn a lot in the process, but if you want this car running soon, you should go with another motor. If it's just a project car and a learning experience, then I can understand a full rebuild, but this isn't a weekend project by any means. Once you get into an engine, you're gonna want to do everything you can to make it new so you don't have to worry about it again.

Lapping valves- Lapping valves is a process that uses an abrasive liquid (lapping compound) to produce a good seal between the valve and the head. If I find the site that has a picture guided how-to, I'll post the link, but feel free to search google or other sites for info.

If you do go the rebuild route, http://www.hm-performance.com has some excellent products for less than the prices you'll find on ebay.

Good Luck,Matt

[mac2686]

Ok thanxs for all the advise guys ill def. use it! If I have ne problems will def. let you kno and ill try and let you know how everything works out once again thanx! Matt C

[BigLeeRoy EngineBuilda]

hey slowback i didnt say to lap bent vavles. in my other post i was sayin that i didnt have compression in the num. 4 cylinder. as i was lapping the valves i noticed that one of the valves wasnt evenly smooth well a closer look and i noticed it was slightly bent. sorry about that maybe i wasnt clear enough. even if you get another motor it could still have problems. but hey this is all good advice any that you take will lead you in the right direction, good luck with the work man.