help with engine idle surging,,,,,,

 Our oldest Son has a 2000 Hyundai Elantra with the 4 cylinder engine and has got me buffaloed,,,, The car started getting a very high idle ,,,so I had him pull the throttle body as it had never been off and figured it was gummed up. After he got it off it was really junked up so,,,two cans of carb cleaner later,,it was finally good as new. He reinstalled it and now the engine just surges all the time. We did not bother any other part of the intake manifold neither can we hear a vacuum leak,,,,?? It just surges from idle to bout 2500 RPM,,,,

 Any ideas ,,,anybody   ???

 OK,,well my Son says HE can hear a vacuum leak,,but I cannot,,,,, so gonna try the sprayin around the intake manifold as I don't see any bad vacuum hoses,,,another thing he said was that when this started,,the engine would always like backfire out the intake BEFORE it would start then stumble for a few seconds before it would start running,,,,,?

 Well,,,Now I know why them oriental people gots little bitty hands,,,,,Dang but they used pretty much all the real estate under the hood of this mofo,,,,,!!!! WHY,,didn't the friggin engineers just rotate the engines and make the intake manifold be in front of the engine instead of at the rear where there ain't no room,,,!!! My hands is gonna not like me tonight as I really struggled on gettin to the 4 bolts on the backside of the intake manifold,,,,whoooeeeee,,,but I finally got it off...!!!

 The intake gasket tells the story,,,at one place the gasket is broke between two cylinders and at another it was leakin to the outside or rather to the inside. A lot of his problems were the injectors. 3 of the 4 must of been shooting straight gasoline as the intake ports are gummed up BIG time. Only one even looks close to have been spraying clean,,!!

 Here's something to think about,,,, I called Oreillys and Autozone for the replacement injectors and like to fall over,,,,$117 EACH,,,yep, $117 EACH,!! So, for the heck of it I check out Ebay and there are several sellers the list a set of 4 for ,,,,,$40 yes,,,$40 for a set of 4 reman injectors. So, I go back to Oreillys and the ones they sell are remans also for $117 EACH or $468 for 4.  Amazon has the same injector set of 4 for $48. Something ain't right and somebody is makin a killing selling theirs for $117 each. That ain't captalism,,thats plain gouging the consumer.  I can wait for 3-4 days and save $428 bucks,,,,,

 

you may not need injectors because

with an intake leek the o2 sensor show

an lean reading so the computer add

more gas to make up for the lean reading

to keep the 02 sensor happy because of

the intake leek it dosn`t suck the gas in

as well so add more gas so there lots of

gas in the intake

  HTH     B:-)            Dnoym

 Well,,I had to order the intake manifold gasket, and it finally came in yesterday. Got everything cleaned up and manifold installed,,them 4 bolts on the back wasn't so friggin bad goin back in. Got everything lashed up and waitin on the new injectors susspossed to be here tamarrow. I'll bet thet little ole engine is gonna purr like kitten,,,,

 MANY THANKS for all the kind words and ,,,Help,,!!