93 Prelude SI using antifreeze. Help!

Reply

  #1  
Old 06-19-06, 07:40 PM
Member
Thread Starter
Join Date: Aug 2003
Posts: 478
93 Prelude SI using antifreeze. Help!

My son's 155,000 mile 93 SI has gradually been using more & more antifreeze. It recently went through a quart in 600 miles. I have thouroughly inspected for leaks and can find none. Water pump is fairly new and no leak at the weep hole. No sign of antifreeze in oil, no foam in valve cover. No sign of antifreeze in the transmission fluid. No smoke or steam from exhaust. No antifreeze smell inside the car like a heater core leak.

The only thing I see is a very slight greenish tinge on all 4 spark plug ground electrodes. Is there a gasket some where or a known problem where antifreeze could be getting drawn in through the intake tract? The car is in great shape. I need to get this figured out before it gets worse.
 
Sponsored Links
  #2  
Old 06-19-06, 07:47 PM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA
Posts: 44,365
could be a head gasket starting to go bad - if so you'll see white exhaust before long
 
  #3  
Old 06-19-06, 07:52 PM
Banned. Rule And/Or Policy Violation
Join Date: Jun 2006
Posts: 138
Ya no coolant flows throught that manifold. I am not sure but coolant could be flowing through the throttle body, you may want to check for leaks in the intake pipe and manifold. I bet I am placing bets on head gasket. Atleast on that car its no that bad of a job.
 
  #4  
Old 06-19-06, 08:07 PM
Member
Thread Starter
Join Date: Aug 2003
Posts: 478
Thanks for the replys. I am having a hard time beleiving a head gasket would go bad and distribute antifreeze evenly to all cylinders, which appears to be what is happening.

I know there are coolant hoses connected to the throttle body. That is why I suspect coolant getting into the intake and going to all cylinders.

I am hoping someone might be able to point me to a known problem like this on the SI motor so I might know more specificly where to look. Possibly a gasket somewhere etc.
 
  #5  
Old 06-19-06, 09:22 PM
rpt
rpt is offline
Member
Join Date: Jun 2006
Location: Pittsburgh
Posts: 49
Try this. When the engine is nice and hot, draw out your oil dipstick. Drip the oil on the exhaust manifold. If there's antifreeze in the oil, there will be some sizzle. In that case, you likely have a bad head gasket. If nothing happens, then the problem is likely somewhere else (but I dunno where).
 
  #6  
Old 06-23-06, 11:06 PM
Member
Thread Starter
Join Date: Aug 2003
Posts: 478
No sizziling. Any Honda Prelude experts here?
 
  #7  
Old 06-24-06, 09:36 PM
billys68ss's Avatar
Member
Join Date: May 2003
Location: USA
Posts: 1,459
If you are losing coolant then the first thing to do is pressurize the coolant system and find where it is going/coming from. This is the most definitive solution. It definately sounds like a head gasket to me as well.
Good Luck,
Billy
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes