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Old 05-24-2005, 04:02 PM   #1
sliver911
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Question Low end bog, bad timing?

I just purchased a 94 legacy sport with the ej22t. the last owner just put in a new water pump and timing belt. Is it possible to retard/advance the timing when doing this. I believe that its not running like it should. I am also wondering if a bad cat or O2 sensor could cause the same issue. any help would be great. Thanks.
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Old 05-24-2005, 04:19 PM   #2
fibuz
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low end bog? welcome to the world of turbo engines(and an old one at that).
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Old 05-24-2005, 09:32 PM   #3
sliver911
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Quote:
Originally Posted by fibuz
low end bog? welcome to the world of turbo engines(and an old one at that).
yeah, thats definately a given. but this is far worse than it should be. it backfires through the intake every once in a while, idles like a frieght train and will not accelerate hard at all. i think i located the problem.
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Old 05-25-2005, 10:15 AM   #4
wrx_driver_2002
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Check to make sure the timing belt is on right, and then check to see if the crank pulley is loose. If the crank pulley has been loose for a long enough time, It will chew the key up, and allow the crank sprocket to rotate on the crackshaft, which REALLY affects how they run.
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Old 05-25-2005, 05:51 PM   #5
suby2low
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and yes. it is really to screw up timing when changing the t-belt.
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Old 05-26-2005, 12:50 AM   #6
fastenova
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Quote:
Originally Posted by wrx_driver_2002
If the crank pulley has been loose for a long enough time, It will chew the key up, and allow the crank sprocket to rotate on the crackshaft, which REALLY affects how they run.
If your crank timing gear is turning (I know it turns with the crank), I'd guess you're SOL. Hello new crankshaft? Let's hope it's not an interference engine, otherwise, hello new engine...

I'm not sure how the key being messed up outside the timing cover would affect the portion of the key that the timing sprocket runs on. Can you explain? Do you have experience with this?

Thanks!
Aaron
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Old 05-26-2005, 08:02 AM   #7
ncarn8
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so youve jumped straight to the engine rebuild line iof thinking.
have you discounted every other possibilty?
_ AFM, knock sensor, coils, fuel pump, etc etc?
An 02 sensor can cause it to run way rich, which can cause hesitation, but it should throw up a code if it detects abnormal voltage.
A blocked cat can cause it to run like a bag of crap as well, really hesitating, bucking etc, many things, (and it can be a reall ahole to isolate it as being the problem.)
Id check voltages, continuity, resistance, all that fun stuff before you buy a new engine for it. And fault codes too.
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Old 05-26-2005, 10:29 AM   #8
wrx_driver_2002
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Quote:
Originally Posted by fastenova
If your crank timing gear is turning (I know it turns with the crank), I'd guess you're SOL. Hello new crankshaft? Let's hope it's not an interference engine, otherwise, hello new engine...

I'm not sure how the key being messed up outside the timing cover would affect the portion of the key that the timing sprocket runs on. Can you explain? Do you have experience with this?

Thanks!
Aaron

Yes, I have expierience with this. That key holds two components on the crankshaft from spinning. It holds the Pulley (Which spins the outside belts) and the sprocket. When the pully comes loose, it grinds the key down to nothing, and at the same time, it widens the hole for the key in the crankshaft (Allowing what's left of the key, and the sprocket to rotate). I've seen them soo bad that we've had to replace engines because of it.

Sometimes you can just put loctite along with a new key, sprocket, and pulley, and be okay. The reason you have to replace the sprocket is because when the pulley is wobbling on the crankshaft, it rounds the surface of the sprocket.

If you reuse the sprocket (and it's surface is not flat anymore) it won't let the pulley set evenly on the sprocket. You can tighten the bolt down as tight as you can, but it will still work it's way loose again (because of the uneven sealing surface between the sprocket and the pulley). It's happened to me before.
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Old 03-13-2012, 09:24 PM   #9
bbond06
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I have a 97 2.2 and i am having similar bogging issues. Bogs really bad on the low end but it seems to get better as it warms up. i have already replaced plugs, wires, coil, air filter, and fuel filter. any ideas for me?
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