C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

cylinder one and five not working

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Old Mar 9, 2014 | 09:51 PM
  #321  
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I bet you have two broken valve springs
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Old Mar 9, 2014 | 10:02 PM
  #322  
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Are we taking bets now...?
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Old Mar 10, 2014 | 02:21 AM
  #323  
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Originally Posted by coupeguy2001
I bet you have two broken valve springs
He's had the head off (see post #21 in this thread). My recollection is that he hand lapped the valves because they were leaking, so he must have removed the valve springs.
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Old Mar 10, 2014 | 05:10 AM
  #324  
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Originally Posted by ch@0s
Are we taking bets now...?



Seriously, I'm sure it is VERY frustrating trying to figure out what's going on, and hope it's something simple.

My thoughts were possibly worn cam lobes, but if the comp. check shows it's still pumping, that shouldn't be it.

Last edited by cohocarl; Mar 10, 2014 at 05:15 AM.
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Old Mar 12, 2014 | 10:44 PM
  #325  
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Any updates?
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Old Mar 13, 2014 | 12:05 AM
  #326  
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Originally Posted by Matatk
Any updates?
Nothing yet. I talk to the mechanic yesterday. He say he did find a fuel liak on the end of the fuel rail at the coupling. mising o ring he say.

He check injectors and he say all ok. Ok spark too. So far nothing new. Waiting on the cylinder diagnostic.

I think he is taking to long. . Any way i will give him more time.

I have to wait.
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Old Mar 16, 2014 | 07:25 PM
  #327  
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update.

the mechanic just told me via whatsapp. tha cylinder number 5 is now working.

he told me that the problem was. intake valve was to tight.

i did not say anything, but kind of extrage since i did ajust the valve according with instructions from her. any way. number five is working.

nothing about cylinder number one yet.
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Old Mar 16, 2014 | 07:35 PM
  #328  
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Originally Posted by hitmanpty
update.

the mechanic just told me via whatsapp. tha cylinder number 5 is now working.

he told me that the problem was. intake valve was to tight.

i did not say anything, but kind of extrage since i did ajust the valve according with instructions from her. any way. number five is working.

nothing about cylinder number one yet.
Did you ever try to adjust the valves while running the engine?
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Old Mar 26, 2014 | 10:03 AM
  #329  
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Originally Posted by ch@0s
Did you ever try to adjust the valves while running the engine?
yes I did. for some reason I did the wrong way. don't know how. but that is what the mechanic say. read the conclusion as follow
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Old Mar 26, 2014 | 11:07 AM
  #330  
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Hello every one.
Finally the problem is solve.
Like I say I had to take the car to a mechanic since I was not capable to pin point the problem.
The mechanic took 3 weekends to find out what was going on,. at the end he find out. Exhaust valve were too tight. On cylinder #5 and #1. And most important I had #1 injector wire was cut off at some point. Making the injectors work, some times and some time don’t. (Intermittent problem)
The mechanic charge me $275 plus $45 for gas.
Seen estrange to me that the valve were to tight . since I did adjust the valve myself. With the engine running method. I guess I did it wrong them.

I think this will put an end of my 2 year quest for engine power. I will get the car back on Sunday. Them I will know what it feel to have a Corvette, for the first time
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Old Mar 26, 2014 | 03:55 PM
  #331  
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Glad he found the problems!
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Old Mar 26, 2014 | 04:42 PM
  #332  
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good
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Old Mar 27, 2014 | 08:38 AM
  #333  
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Old Mar 27, 2014 | 12:43 PM
  #334  
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I'm happy for you..
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Old Mar 27, 2014 | 09:14 PM
  #335  
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Nop the mechanic just call me. He crash the car..............f.....k
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Old Mar 27, 2014 | 09:20 PM
  #336  
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Originally Posted by hitmanpty
Nop the mechanic just call me. He crash the car..............f.....k
After all this!!!!
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Old Mar 27, 2014 | 09:25 PM
  #337  
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Originally Posted by hitmanpty
Nop the mechanic just call me. He crash the car..............f.....k
How the heck did he crash your car? How bad is it? Man, you were just getting it running right!
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To cylinder one and five not working

Old Mar 28, 2014 | 10:21 AM
  #338  
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Originally Posted by hitmanpty
Nop the mechanic just call me. He crash the car..............f.....k
I'm sure many of us are waiting for the pictures and the video of the engine making lots of power! I assume the crash was not so severe as to disable the engine?

I would be asking some direct questions of the mechanic, because a lot of what he reported does not make sense. example, post #326, a fuel rail o ring missing? how could that not be spraying fuel at 40 psi? if it were not, how did he find it? you reported many times that the pressure was holding.

post 327, you report an intake valve tight on #5, now he says it was exhaust.
You probably follow the reasoning here -how could the man not be consistent on what he was finding?

anxiously awaiting the video.
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Old Mar 28, 2014 | 02:13 PM
  #339  
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With Joe
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Old Mar 29, 2014 | 12:06 PM
  #340  
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Originally Posted by joe paco
a fuel rail o ring missing? how could that not be spraying fuel at 40 psi?
I was thinking that also...I had nicked a brand new o-ring putting mine back together years ago. When the pump pressurized it, it shot at least 10 ft. I'm glad I didn't have a butt going...
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