I have a 1997 Dodge Neon 2.0 SOHC that recently broke the timing belt due to the failure of the timing belt tensioner pulley. I fixed that, realigned the timeing marks ect. according to the Haynes manuel, put her back together but when I fired her up... first she backfired with black smoke and then she ran horribly and only when I was giving her the gas. When I let off the gas, she dies...anybody with a clue on this for a new member?
That really sounds like the timing is turned way, way down. How low are the rpm's in drive? How about you introduce yourself in the "introduce yourself" thread :wink2:
Congratulations!!! You are the proud owner of a car that now needs an engine rebuild!!! Have fun!!!
Damn that was fast :laughing: I thought it would be low idle :doh:
With black smoke and back-firing...its definatly not just low idle. Anytime a timing belt snaps or a timing chain goes...your going to need a rebuild :laughing:
And yet you said it so nicely too. :laughing: Poor newbie isn't gonna hang around now....
Always open for more info :laughing: I have snapped my old Integra's timing belt twice and it never did that :2cents:
Well your a lucky mother ****er then lol
You know it :laughing:
so every car that snaps a belt or chain needs a rebuild eh? so im gunna try to sell this to my customers but how can i back it up? please do tell :ohcrap:
Well, its not going to be that way everytime...but about 95% of the time it will. See, once the belt/chain goes, the engine gets warped around, especially if your at higher speeds. If you are going at lower speeds say...35-50mph you have a better chance of not needing an engine rebuild.
But then again it can still mess up the internals :2cents:
Exactly. Anytime something like that happens, I would suggest getting your internals checked. :ohcrap:
I'm not positive, but I think he was just gassing it in park...you know...not driving?? :screwy:
ya think :roll: :laughing:
that could still do some damage...just not anything horrible like what he is describing.
" See, once the belt/chain goes, the engine gets warped around, especially
if your at higher speeds. If you are going at lower speeds say...35-50mph
you have a better chance of not needing an engine rebuild."
now cmon i really wanna know how to sell this idea, but your answer just doesn't cut it? please explain
all right. stop bs-ing around w/ the retarded sh*t. mdunnel, your valves are most likely bent b/c you have what is called an "interference" motor. that means when the timing belt breaks, the valves contact the pistons and bend (or break, in extreme circumstances). with an interference motor, it doesn't matter whether you were at 9000rpm or turning the engine over by hand, the pistons were going to hit the valves. so it looks like you're going to have to pull the head off and take it to a machine shop and get a valve job and some new valves. good luck! :thumbs:
Which still will cost a helluva lotta money :laughing:
Better to just go to www.hahnracecraft.com and get one of those stroked out DOHC 420A's. You can get a new engine for that car for about $1500
Gee... That was a quick and massive response! I was actually approaching a red light in a one light town when she went dead, coasted through the light and to the shoulder to be hauled home again. I did have the forsight to purchase a junkyard engine two years ago so now I'm heading to a machine shop to get it's head cleaned up and the valves checked. Appreciate the words.
Yes, if you have an interferance motor. Why do you insist on spewing crap out of your pie hole and call it gospel? :screwy:
You know, I really thought that was a given. How about you shut the **** up?
Oooo, I feel all hot and crispy...not! Take your own advice, and do not continue to waste the oxygen that was aloted to you.
Gentlemen! Please! The head has been removed as well as the carbon coating on top of the pistons revealing four half-moon gouges on each of the pistons. Now I'm wondering if the pistons have to be replaced, can they be replaced with pistons from my junkyard motor, and what are the chances of the junkyard motor piston rings being reusable? Dodge wants $150.00 for a new set of rings!
are they gouges or valve reliefs w/ the carbon knocked off? if you clean up the pistons and they do not have cracks or rough edges in the affected areas, you can reuse them. as for the pistons and rings in the junkyard motor--it depends on how long it sat. i just put a 52k junkyard motor in my wife's car and it seems to be working out fine despite the uniform coating of dust on the motor when i got it (sat for a while) is there a reason you're not just dropping the whole junkyard motor in?
My original plan was to rebuild the junkyard motor and use it before this kind of thing happened, but having to deal with the little "fires" before the big one has left the motor cannabalized. Then there's the lack of experience and the time required for the job, safety factors of working alone way out in the country and of course the cost of a rebuild kit. But all those decisions ect. are behind me now. I got the cleaned and rebuilt head back from the shop yesterday and now I go to the task of properly installing the thing.
well if you didnt have valve relief on your piston heads....you do NOW! HEHEHE. and dodger 65 thankyou for takin the time to explain what i was trying to get at, if i'ts not an interference motor like those 1.9L spfi ford escort motors, i go in with the new belt and bam bam bam about 45 minutes and the guy drives away, no new motor no new heads... no damage just a broken belt, well i havent seen a broken belt yet but they sure like to strip the teeth off at the crank gear, especially on standards, heres a tip if you your going in to replace a timing belt on an escort with a standard transmission, prepare the customer for a clutch job too just as a warning the 2 escort belts i did had standards and after the first one i found his clutch was slipping like a mutha and the shock loading on the motor stripped the teeth out so the next time i saw one come in i told the guy what happened last time and he said well im sure the clutch is fine and just wanted the belt done....sure enough clutch slipped really bad and he laughed all the way to the bank ...;)
hey there maybe when you sent the aliment marks the cylinders where not where they where suppose to be , usually have havee to rotate to tdc of the firing order.some manuels do not tell you that, but most of the do.let me know your thoughts on that.
if the pistons are gouged check the valves for seating in the head if those gouges are not valve reliefs the the valves will be bent and not seating giving you backfire throught the exhaust or intake depending on which one is bent and not sealing
Another contestant for the "Stupidest Thing I've Ever Heard" award. I can see why this guy got banned. :banghead:
He was banned because he said he was 23, but was actually was 14...he came
back as "Slipknot"...but he doesn't seem to be on anymore :ohcrap:
He wasn't discovered by a post either, a friend of his hacked his account or something, and he told us the truth :laughing: