2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

running poorly

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Old Sep 18, 2009 | 07:41 AM
  #1  
ITSWILL's Avatar
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From: Ortonville, MI
running poorly

TII engine s4

So yesterday the car was running flawlessly and today on the way in to school it was just running like crap everywhere in the rpm range.

I can usually make 8-9 pounds of boost but could only make 5 max. Also when cruising I am usually at 10-12 inches of vacuum but am now at 6.

I suspect a decent boost leak somewhere but I couldn't find any so before I go pulling the uim looking for problems I am open to other suggestions.
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Old Sep 18, 2009 | 07:45 AM
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Compression test!!!
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Old Sep 18, 2009 | 08:59 AM
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Originally Posted by FelixIsGod29X
Compression test!!!
I don't want to, I'm afraid.
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Old Sep 18, 2009 | 09:24 AM
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Alright sell me your car haha
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Old Sep 18, 2009 | 09:47 AM
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lol felix is right sounds like low compression or a collapsed spring
TwEaK
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Old Sep 18, 2009 | 09:56 AM
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Yeah im thinking a cracked side seal or flatten sping? Just throwing it out there, not like it hasnt happen before. Either way a compression test will give you a good understanding.
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Old Sep 18, 2009 | 07:13 PM
  #7  
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From: Ortonville, MI
Front rotor: 90 90 90
Rear rotor: 60 30 30

Bad apex seal or spring, so that's 2 engines in one summer. I'm geting a ******* ls1.
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Old Sep 19, 2009 | 09:38 PM
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I was hoping for a little empathy.
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Old Sep 19, 2009 | 09:51 PM
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Rebuild your motor, break it in properly and have fun!
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Old Sep 19, 2009 | 11:43 PM
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Wow that sucks. Screw an LS1 though, I would just get another car if you're sick of it.
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Old Sep 20, 2009 | 10:29 AM
  #11  
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For now Im going to drive it until I fix the clutch in my truck, then its going away early for the winter.

I am not sick of the car and I could never get rid of it, I just cant afford to keep replacing these engines.
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Old Sep 20, 2009 | 02:28 PM
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get it rebuild..its most likelly last longer than replacement motor (specially from japan).
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Old Sep 20, 2009 | 08:04 PM
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Get a daily driver Best purchase I made for my FC is... my Honduh Civic Si. It gets me to work, so I can earn a paycheck and to throw money at the FC. It also allows me to drive to places to buy some parts. Felixisgod29x knows
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