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HELP with rough running in 2vz-fe

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Old 02-23-2014, 02:52 PM   #1
FreidTaco [OP] FreidTaco is offline
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HELP with rough running in 2vz-fe

Just bought a 1991 camry v6 manual with the 2vz-fe engine.
Had been sitting for a couple of years.
We just drove it 400 miles and ran heat and injector cleaner through it. WE have only been running premium gas.

We are having troubles with getting the engine to run well.
Idles fine.
Engine runs rough from 1k to 3k
Runs great at 3k to 4.5k
Can not get it above 4.5k
Even parked trying to rev it, it will not go above that.
Redline is supposed to be at 6.8k

Hard to get going, bucks and knocks below 2.5k

Any Help would be greatly appreciated.
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Old 02-24-2014, 04:47 PM   #3
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Possibly narrowed it down to a timing issue. Fingers crossed. Above know what degree this engine is supposed to be running at?
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Old 02-24-2014, 08:20 PM   #5
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we did have CEL come on originally and did a manual check of the codes and they came up as a knock sensor (due to bad gas) and then a starter position sensor (wire was just poorly twisted together, fixed with solder). went away after 100 miles on premium gas and now no codes.
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Old 02-28-2014, 10:11 AM   #8
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Quote:
Originally Posted by Torspd View Post
Helped my neighbor with his Camry last weekend. Was having a misfire code, and car wouldn't even stay started.

Thought he had bad gas that was full of water. Ended up being his fuel filter was full of crud after 150K miles.

This is what the fuel looked like.



^^^ That is terribly nasty.


Changed out the filter, and the car would start and run. Also ended up having a bad coil as well. So we put a new one in as well.

But let it be known, that the car wouldn't even run until after the filter was changed.

Figured that you would like to see that.
Not sure of your mileage, but this crud doesn't atomize or combust very well.
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Old 02-28-2014, 02:32 PM   #11
FreidTaco [OP] FreidTaco is offline
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Yes we changed the filter before we purchased it. We put heet and fuel injector cleaner in tank before we even dove any place. Now has 600 miles on it with only premium. The other night
I was messin with the timing on the distributor and noticed that the cap is maxed out to the advanced side. when you retard the timing in runs shittier and this was confirmed by a backfire through intake. What i am guessing that happened was that the cam gears that were in the trunk were replaced and or the belt with it. My guess is that the belt is one cog off (5*) off. and would potentiay prevent the timing from being advanced any more, that is why im guessing it runs decent with high rpm and 1/4 throttle cause that would advance the timing and would have the correct amount of fuel/air mix for a lower rpm but has little power because of little inputs and correct timeing.
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Old 02-28-2014, 08:42 PM   #13
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crank is at 0*TDC and the even cylinder bank is line perfectly......

the odd bank is fuckin us. off two teeth. hope there is no internal damage
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Old 02-28-2014, 08:44 PM   #14
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There won't be. Those engines are non-interferance engines.
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Old 02-28-2014, 08:45 PM   #15
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You gonna give me a ride in this POS when you finish?
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Old 02-28-2014, 08:49 PM   #16
FreidTaco [OP] FreidTaco is offline
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Quote:
Originally Posted by BamaToy1997 View Post
There won't be. Those engines are non-interferance engines.
THANK YOU!!!!!!!

Quote:
Originally Posted by BabyTaco View Post
You gonna give me a ride in this POS when you finish?
Yes sir, we need to order some belts and various bits, along with some port and polish, and valve clearance double checking.
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Old 02-28-2014, 08:58 PM   #18
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Quote:
Originally Posted by Blackdawg View Post
This. You'll be fine.

Frozen idle pulley haha what happened to my supra too
The shredding indication of that?
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Old 02-28-2014, 09:17 PM   #20
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What brand, DAYCO, DNJ ENGINE COMPONENTS, ITM, Gates, Goodyear, acdelco
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