Results 1 to 5 of 5

Thread: Leak down tester

  1. #1
    Join Date
    Oct 2014
    Posts
    102

    Default Leak down tester

    Anyone have one that I can borrow for a day? Looking for a bent valve.

  2. #2
    Join Date
    Sep 2003
    Location
    Newbury Park, CA
    Posts
    2,244

    Default

    I have one, a Harbor Freight Special. They might be cheaper to buy than ship around.

    Where are you located?

  3. #3
    Join Date
    Oct 2014
    Posts
    102

    Default

    I'm near LAX. Not too far a drive from NP. Still wrestling with whether or not to pull the engine out. Decided to sleep on it first.

  4. #4
    Join Date
    Sep 2003
    Location
    Pasadena, CA
    Posts
    2,130

    Default

    While you have it running, did you ever check the AFR? If so, is it within reason? ITB balanced? ECU crank timing calibrated? TPS response normal (not reverse and steady rising) and ECU calibrated for TPS? Fuel pressure on target and stable? Do all injectors actually squirt?
    Sorry if I am asking the obvious...another problem that I saw on one engine (forgot who's it was) the throttle bodies had vacuum nipples on the underside that lost their caps.
    I doubt it is a bent valve with the compression values you mentioned in another post. I had much worse pitted valve leakage on my old engine and it idled o.k.

  5. #5
    Join Date
    Sep 2003
    Location
    Newbury Park, CA
    Posts
    2,244

    Default

    Prabjohn's car was missing one of the setscrews or nibbles that were underneath the intake causing a fairly large leak and lean miss. The TB mfg cleverly put them in the most difficult to see and reach area possible.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Differential Leak
    By Capt Rex in forum Questions and Answers
    Replies: 2
    Last Post: January 12th, 2016, 09:22 PM
  2. Troubleshooting an oil leak
    By Frizille in forum Questions and Answers
    Replies: 3
    Last Post: June 21st, 2015, 07:39 AM
  3. Engine Leak-Down Tester
    By slomove in forum For Sale/Wanted
    Replies: 4
    Last Post: August 21st, 2006, 11:20 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •