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98 V6 EX AT wont stay started

Old Jan 3, 2008 | 06:56 PM
  #11  
HondatechAV6's Avatar
Joined: Nov 2007
Posts: 701
From: Chicago, IL
Default RE: 98 V6 EX AT wont stay started

yeah, i do. but there is no way to confirm that without a fuel pressure test.

when checking fuel pressure if, when you turn the key on engine off, it rises to spec then starts to reduce pressure there isa leak - either an injector, fuel pressure regulator, fuel pump check valve or external leak.

if it starts to leak down a few seconds after you turn the key on you know this is gonna be easy since you can track it down now. use a pair of hose clamps and clamp down the fuel return line. now turn the key on, does the pressure hold? if so you know the fuel pump is bad or there is an external leak. if the pressure doesn't hold you know either an injector is leaking or the fuel pressure regulator is leaking into the vacuum line. now pull the fuel pressure vacuum line off - is it wet with fuel? bingo! replace it and verify the repair!

if fuel pressure goes to spec and holds steady, and lowers/raises properly as your disconnect/reconnect the fuel pressure regulator vacuum line, it's most likely a spark problem. but from you're symptoms i'd think fuel related.
 
Old Jan 3, 2008 | 06:59 PM
  #12  
sir_nasty's Avatar
Senior Member
Joined: Feb 2006
Posts: 6,290
From: Montana
Default RE: 98 V6 EX AT wont stay started

if it is a leaky injector then once the car starts in theory shouldn't you be able to turn the car off then start it quickly and easily right away? (I'm asking this more for my own knowledge but it should help besenna as well...) Granted a fuel pressure test is the best way and the proper way and the only way to be certain...


Nevermind, just realized this isn't related to the question at hand but I'm curious none the less....
 
Old Jan 3, 2008 | 07:21 PM
  #13  
HondatechAV6's Avatar
Joined: Nov 2007
Posts: 701
From: Chicago, IL
Default RE: 98 V6 EX AT wont stay started

well, if the injector isn't leaking bad you can do that. but say you have more than one injector leaking...say all of them. and they are leaking down fast. now you have a full blown flood after a fuel seconds of shutdown! thats a rare situation - but it can happen.


now that i think about it - gas can be a factor as well. you didn't accidentally fill up with some diesel or e85?
 
Old Jan 4, 2008 | 09:36 AM
  #14  
00AccordLX5spd's Avatar
Registered User
Joined: Jan 2007
Posts: 4,322
From: Brandon, MS
Default RE: 98 V6 EX AT wont stay started

ORIGINAL: HondatechAV6
now that i think about it - gas can be a factor as well. you didn't accidentally fill up with some diesel or e85?
Good call. I didn't even think about that! And I see it (deisel in a gas engine and gas in a deisel engine) more often than I should working in the insurance industry.
 
Old Jan 4, 2008 | 10:18 AM
  #15  
bsenna916
Unregistered
Posts: n/a
Default RE: 98 V6 EX AT wont stay started

I inspected the trottle body. It hade some sticky black build up, not too bad. Cleaned it out.

I had the battery more thoroughly tested. It needed to be replaced. I got a new one.

When I replaced the plugs, the old ones were blackened, but there was no build up. The blackness was dry.

I will not be able to put the battery in and check fuel pressure until saturday. Thanks for all the suggestions so far. I'll let you know what happens.
 
Old Jan 4, 2008 | 10:51 AM
  #16  
falkore24's Avatar
Been Around A Long Time Member
Joined: Aug 2007
Posts: 6,213
From: Wayne, NJ
Default RE: 98 V6 EX AT wont stay started

Sticky buildup --- aka oil pulled through the PCV, caking up with dust that made it through the filter over the past decade ====> glue

I'm standing by my first thought that this glue sealed the TB shut. With that cleaned out, a jump should work now. Also please get the alternator tested.

Please verify that these are NGK plugs.
 
Old Jan 4, 2008 | 06:09 PM
  #17  
bsenna916
Unregistered
Posts: n/a
Default RE: 98 V6 EX AT wont stay started

They are Bosch.
Bosch = Bad?
NGK = Good?
 
Old Jan 4, 2008 | 06:11 PM
  #18  
sir_nasty's Avatar
Senior Member
Joined: Feb 2006
Posts: 6,290
From: Montana
Default RE: 98 V6 EX AT wont stay started

Bosch + Honda = Coil Eater.... Toss them ASAP and get NGK and continue TS from there...
 
Old Jan 4, 2008 | 06:15 PM
  #19  
bsenna916
Unregistered
Posts: n/a
Default RE: 98 V6 EX AT wont stay started

OK. Well I haven't started it with the Bosch plugs in as the new battery is still waiting to be put in.
 
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