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Old Jan 11, 2021 | 05:36 AM
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Default Stupid moment 🙁

Ok so had a stupid moment and had my injectors on the wrong bank. #8 cyl filled with fuel. Just got the pass head off and only one bent pushrod #6. Head is good at least. No damage on drivers side. can still rotate the engine manually and all the pistons come flush with the top of the block. What are the chances I bent a rod? I’m guessing only way to know is remove the oil pan?

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Old Jan 11, 2021 | 10:40 AM
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Carefully look at how high the piston comes up and closely compare it to the others.

If you can get a deck bridge and measure how far the piston is up compared to others

You shouldn't have filled a cylinder unless an injector was stuck open. Not saying it's impossible, but usually if you fill a cylinder it's from a stuck injector

And what do you mean by on the wrong bank, the injectors don't care where they are.
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Old Jan 11, 2021 | 12:31 PM
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Every piston reaches the top of the cylinder flush with the block. Would it be more obvious if a rod was bent?
i mean the injector harness was swapped to wrong side.
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Old Jan 11, 2021 | 02:17 PM
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Originally Posted by Vette-byrd
Every piston reaches the top of the cylinder flush with the block. Would it be more obvious if a rod was bent?
i mean the injector harness was swapped to wrong side.

Depends how much it's bent. If it's the slightest bend it may not be noticeable by eye. If it's bent bad it should be noticeable.

It's probably okay. Probably.

I would make absolutely sure you don't have a stuck injector though, before you put it all back together.
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Old Jan 11, 2021 | 04:28 PM
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Originally Posted by 00pooterSS
Depends how much it's bent. If it's the slightest bend it may not be noticeable by eye. If it's bent bad it should be noticeable.

It's probably okay. Probably.

I would make absolutely sure you don't have a stuck injector though, before you put it all back together.
And the best way to do that would be with a noid light while cranking with the fuel pump fuse pulled? Are any of the $10 cleaning tools for it?
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Old Jan 11, 2021 | 05:12 PM
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Originally Posted by Vette-byrd
i mean the injector harness was swapped to wrong side.
Bad injector timing shouldn't flood an indirect-injection engine. The old batch fire port injection systems sprayed fuel without regard for the crank position. I think you have a different problem.
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Old Jan 12, 2021 | 12:56 AM
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Stuck injector? Planning on throwing it back together with a set of injectors I know are good.
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Old Jan 12, 2021 | 09:33 AM
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Just some thoughts. Verify injector drivers before pressurizing fuel system. If stuck low, injector stays open. Leave spark plugs out until you know injectors not dumping fuel and filling cylinders.
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Old Jan 12, 2021 | 05:11 PM
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To see if you have a stuck injector get a fire extinguisher ready (do this anytime you're messing with fuel). Make sure it's full.

Have the fuel rail connected to the fuel line and pulled up out of the intake. Turn the key on to pressurize the fuel system DO NOT CRANK THE ENGINE and see if fuel sprays out of an injector while just sitting there.

Or you could try to blow through each injector and see if one is just open, i've always done the above method to check them, but blowing through them to check would likely work for checking for one that's just dead open. But probably wouldn't work for a drippy one, which you also need to check for since it could drip and drip and fill the cylinder.
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Old Jan 13, 2021 | 09:52 AM
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I had an injector with a slow leak that did the same thing. I did a similar thing that @00pooterSS said except i pulled the rail off and put compressed air on rail set at 60 psi to find the leaky injector. I also hydrolocked my motor but got lucky without damage. Pretty scary when you start your car and it makes a loud thud.
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Old Jan 13, 2021 | 09:57 AM
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I have found blowing through them will show stuck open if bad enough.

take your rail, put injectors in, get 8 glasses of water and put each injector in while still attached to rail then put 40 psi of air to rail and look for air bubbles in each cup. You should see zero air bubbles
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Old Jan 13, 2021 | 11:49 AM
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I like the pressurized air idea, and the injectors in water looking for bubbles is also excellent.

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