money
RSS Facebook

RCMF

Welcome, Guest. Please login or register.
December 12, 2017, 14:21:40 PM

Login with username, password and session length

Articles

Author Topic: Black Exhaust Deposits from Petrol Engine  (Read 399 times)

0 Members and 1 Guest are viewing this topic.

Offline British Victory

  • Trade Count: (0)
  • RCMF Ace
  • ******
  • Thank You
  • -Given: 5
  • -Receive: 20
  • Posts: 4,513
  • Liked: 70
  • Country: gb
  • Changed from drone.
  • BMFA Number: 101584
Black Exhaust Deposits from Petrol Engine
« on: December 01, 2017, 21:45:39 PM »
Running my ngh 25 after a twelve month lay up. to get it started I had to open the low speed needle a 1/4 of a turn.
It performs very well but the amount of black sh1te coming out of the exhaust is concerning me.
I have about a 33:1 petrol:oil mix, which is what I the makers recommend.
If I lean out the low speed needle by more than 1/8 turn she dies on me.
Is it because I ran it for about 20 mins at low speed?
Should have said, the oil is castrol power 1 racing fully synthetic.
« Last Edit: December 01, 2017, 21:48:17 PM by British Victory »
there's only one f in RCMF,
               John


Offline itsme

  • Trade Count: (0)
  • RCMF Ace
  • ******
  • Thank You
  • -Given: 155
  • -Receive: 76
  • Posts: 20,793
  • Liked: 2083
  • Country: gb
Re: Black Exhaust Deposits from Petrol Engine
« Reply #1 on: December 02, 2017, 00:24:57 AM »
Could very well be too much oil.

Sent from my SM-A300FU using Tapatalk


Offline Redbaronn

  • Trade Count: (0)
  • RCMF Pilot Officer
  • *
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 3
  • Liked: 0
  • I'm so new it hurts!
Re: Black Exhaust Deposits from Petrol Engine
« Reply #2 on: December 02, 2017, 08:58:21 AM »
Whats the spark plug looking like, could just need a bit of work to clear all the crap out.


Offline British Victory

  • Trade Count: (0)
  • RCMF Ace
  • ******
  • Thank You
  • -Given: 5
  • -Receive: 20
  • Posts: 4,513
  • Liked: 70
  • Country: gb
  • Changed from drone.
  • BMFA Number: 101584
Re: Black Exhaust Deposits from Petrol Engine
« Reply #3 on: December 06, 2017, 07:28:07 AM »
Spark plug black and oily, I spent a little time leaning out the top end and bottom end got them as far as I can get them (I think!!!) and there's still black slime leaking out the pipe joins, not so much though.
there's only one f in RCMF,
               John

Offline Redbaronn

  • Trade Count: (0)
  • RCMF Pilot Officer
  • *
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 3
  • Liked: 0
  • I'm so new it hurts!
Re: Black Exhaust Deposits from Petrol Engine
« Reply #4 on: December 06, 2017, 08:29:03 AM »
Definitely too rich, the black oil deposits will now probably never go completely, the oil is doing what it is supposed to do stick to metal, no harm done better too rich than too lean


Offline itsme

  • Trade Count: (0)
  • RCMF Ace
  • ******
  • Thank You
  • -Given: 155
  • -Receive: 76
  • Posts: 20,793
  • Liked: 2083
  • Country: gb
Re: Black Exhaust Deposits from Petrol Engine
« Reply #5 on: December 06, 2017, 08:35:06 AM »
Definitely too rich, the black oil deposits will now probably never go completely, the oil is doing what it is supposed to do stick to metal, no harm done better too rich than too lean
I used to get a bit on my Zenoahs, since changing to Rock fully synthetic oil its all gone.


 

BloQcs design by Bloc
SMF 2.0.2 | SMF © 2011, Simple Machines
SMFAds for Free Forums
TinyPortal © 2005-2012
Page created in 0.324 seconds with 43 queries.