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98 civic Hx automatic wont rev

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Old Jan 11, 2015
  #31  
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Re: 98 civic Hx automatic wont rev

I thought your complaint was that the engine can't rev all the way to redline and has little or no power?

I was guessing that sounded like an airflow restriction, such as a clogged catalytic converter or maybe a clogged air breather inlet.
(I've found breathers LOADED with dog food before, due to rodent activity).
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Old Jan 14, 2015
  #32  
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Re: 98 civic Hx automatic wont rev

Originally Posted by Ts civic
Ok ok This is the only thing that makes changes I poured sea foam in the vacuum port and It revs up only when I pour it in,,when Im done it quits revving
Is this site for real,,,? or am I looking in the wrong place for info
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Old Jan 14, 2015
  #33  
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Re: 98 civic Hx automatic wont rev

Originally Posted by Ts civic
Is this site for real,,,? or am I looking in the wrong place for info
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Old Jan 15, 2015
  #34  
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Re: 98 civic Hx automatic wont rev

Originally Posted by ezone
I thought your complaint was that the engine can't rev all the way to redline and has little or no power?

I was guessing that sounded like an airflow restriction, such as a clogged catalytic converter or maybe a clogged air breather inlet.
(I've found breathers LOADED with dog food before, due to rodent activity).
I'm not tryin to be a smartass but it is hard to explain on here . Anyways it runs fine until 4000 rpm it cuts out and if I back off the throttle a lil it will pick back up but never goes over 4000 rpm,,,,the only way is pour seafoam in the intake at the same time I rev it up but when I quit pouring it goes back to under 4000rpm
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Old Jan 15, 2015
  #35  
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Re: 98 civic Hx automatic wont rev

Anyways it runs fine until 4000 rpm it cuts out and if I back off the throttle a lil it will pick back up but never goes over 4000 rpm,,,,the only way is pour seafoam in the intake at the same time I rev it up but when I quit pouring it goes back to under 4000rpm
I think I understand now....

If the car is not moving, shifter is in park or neutral, then what you describe is correct. The computer limits no-load engine RPM to help avoid engine damage.

You have to have the car in gear and be driving (computer must detect a valid VSS input) in order to get the engine to rev higher than 4000.
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Old Jan 16, 2015
  #36  
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Re: 98 civic Hx automatic wont rev

Originally Posted by Ts civic
I'm not tryin to be a smartass but it is hard to explain on here . Anyways it runs fine until 4000 rpm it cuts out and if I back off the throttle a lil it will pick back up but never goes over 4000 rpm,,,,the only way is pour seafoam in the intake at the same time I rev it up but when I quit pouring it goes back to under 4000rpm
OK I have a question ,,the fuel line goes into the rail right it has 2 tabs to line it up right,,OK how many crush washers are supposed to be on there ,? I have 4 aluminum and 2 copper is that right ???? Just curious ,,,Thanks
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Old Jan 16, 2015
  #37  
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Re: 98 civic Hx automatic wont rev

Originally Posted by Ts civic
OK I have a question ,,the fuel line goes into the rail right it has 2 tabs to line it up right,,OK how many crush washers are supposed to be on there ,? I have 4 aluminum and 2 copper is that right ???? Just curious ,,,Thanks
One on each side of the line fitting....

A design could use soft copper or aluminum crush washer or maybe even a rubber gasket. Depends on what needs to be sealed and what's flowing in the system. On a fuel system you can mix aluminum and copper, no problem as far as I know. They just have to seal up and not leak fuel under pressure.




A sealing washer needs to be placed between each solid item in the stack.

Like

Bolt
Washer
Round fitting
Washer
Fuel rail





Or if you had a double line stack it would be

Bolt
Washer
Round fitting
Washer
Round fitting
Washer
Fuel rail

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