Like Tree0Likes

HP 500 EFI Injection

Reply
Old 01-31-2003, 04:33 PM
  #1
Platinum Member
Platinum Member
Thread Starter
 
ApachePete's Avatar
 
Join Date: Aug 2001
Location: Sarasota,FL & Saugatuck, MI
Posts: 1,044
Default HP 500 EFI Injection

One of mine (the one with the bad starter) has recently been making a very loud "hissing" noise when it is started cold. The noise appears to be coming from the intake plenum, and sounds somewhat like a blow-torch.

After 5-10 minutes, when the motor warms up, the noise stops. The engine seems to run fine then, although I've noticed that the oil pressure is now 10-15 pounds less than it used to be.

I'm wondering if it's possible for an injector to "stick', and if the reduced oil pressure could be a symptom of gas diluting the oil (although it looks and smells fine).

Any ideas?

After 4 years and 300 hours with zero problems, I guess my luck has run out. I blew a Bravo drive (the other side from the engine problem), and just got the boat back yesterday (with new XR upper gears) when the starter and "noise"/low oil pressure developed.

Last edited by ApachePete; 01-31-2003 at 04:38 PM.
ApachePete is offline  
Reply With Quote
Old 02-01-2003, 02:28 PM
  #2
Platinum Member
Platinum Member
Thread Starter
 
ApachePete's Avatar
 
Join Date: Aug 2001
Location: Sarasota,FL & Saugatuck, MI
Posts: 1,044
Default

ttt
ApachePete is offline  
Reply With Quote
Old 02-01-2003, 02:38 PM
  #3
apache41
Guest
 
Posts: n/a
Default

As they used to tell me when I blew my first drives (yes, I blew them both):

"Welcome to the world of offshore boating!"

It is an expensive hobby.

So: 4 years, 300 hours with Zero problems on an Apache is quite an achievement. See it positivly!

I would give the engine to service - I don't think an injector can "stick".
 
Reply With Quote
Old 02-01-2003, 02:47 PM
  #4
Registered
 
Join Date: Jul 2002
Location: Troy, Mich
My Boats: 1984 Chris Cat
Posts: 2,707
Default Vacuum Leak

The hissing sound is probably a vacuum leak that goes away when the engine warms up which means a gasket is travelling due to metal warming up and expanding/contraction. I would have a qualified mechanic review and the vacuum gauge will tell the story.

Wannabe
wannabe is offline  
Reply With Quote
Old 02-01-2003, 02:47 PM
  #5
Platinum Member
Platinum Member
Thread Starter
 
ApachePete's Avatar
 
Join Date: Aug 2001
Location: Sarasota,FL & Saugatuck, MI
Posts: 1,044
Default Apache 14

The boat I've had the terrific luck with is my Formula 382 with HP500efi's, not an Apache.

I never had luck like that with either of my Apaches, unfortunately. That's the main reason for getting the Formula: I simply got tired of limping home on one motor 3 or 4 times a summer.
ApachePete is offline  
Reply With Quote
Old 02-01-2003, 02:53 PM
  #6
Platinum Member
Platinum Member
Thread Starter
 
ApachePete's Avatar
 
Join Date: Aug 2001
Location: Sarasota,FL & Saugatuck, MI
Posts: 1,044
Default Wannabe

Thanks.
ApachePete is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JOJO
General Q & A
8
09-18-2007 02:45 AM
obsessioncatsass
General Q & A
4
04-10-2006 08:13 PM
Cat man do
General Boating Discussion
10
03-06-2006 07:51 PM
gsmith9898
General Q & A
8
10-20-2005 03:25 PM



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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 05:36 PM.


Copyright 2011 OffShoreOnly. All rights reserved.