DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View Lister-Petter Engines

CATEGORY LISTINGS > LISTER-PETTER > Hunting

[ REFRESH ]

Thread Title:

Hunting

Created On Wednesday October 16, 2002 03:32

DET Moderator

Posts: 28
Joined: Mar 2002

Wednesday October 16, 2002 03:32
Via Email: have a Lister 3900648LPWS3A-42 and I am having problems with the engine hunting while ticking over ? ( 30 HP, 3cylinder water cooled.) Can anybody help. I have changed the oil filter, air filter, and fuel filter. No difference

Quote

Top

Bottom

badges65

Posts: 132
Joined: Jul 2002

Wednesday October 16, 2002 15:04
Hi, Check around the gov and racks not sure of their setup but the most likely spot to check, see that rack is moving freely and check to see if the injector pump has to have oil in it some do useally a small plug and has to be filled with diesel. don ------------------------- http://invertedvboats.741.com/

Quote

Top

Bottom

Pussycat

Posts: 9
Joined: Mar 2003

Tuesday March 11, 2003 19:50

In response to you hunting problem i recently rebuilt a three cylinder lister engine and had a problem with hunting. If your engine is the same it has individual jerk style injection pumps and the fuel control rack and governor connections are inside windows under the pumps. Remove the plates and check the connections and adjustments. Also a simpler check may be air in your fuel system, this may also cause the engine to rev up and die down . hope this may help you .

Quote

Top

Bottom

FINGERS

Posts: 2
Joined: May 2006

Saturday May 20, 2006 11:29
Excuse me but what is hunting ? regards Fingers

Quote

Top

Bottom

timnic

Posts: 2
Joined: Jun 2007

Wednesday June 20, 2007 15:26

I understand 'hunting' as a type of surging... where the engine revs up slightly and then slows down - repeating this cycle in a rhythmic pattern. It usually occurs around idling (or just above) and when the engine has no load on it. The most likely causes are in the fuel pump:- sticking rack bar and/or worn governor. Some very early Leylands (the famous O.600) had pneumatic control to the fuel pump rack, and were very prone to this problem. They required quite careful adjustment to the idling speed (set on a butterfly in the inlet manifold) in conjunction with a small airbleed valve in the rack damper on the back of the pump.

I agree completely with everything said - make sure the fuel supply is in order before touching any fuel pump adjustments.

Good luck

Tim Nicholson

-------------------------
Tim Nicholson

Quote

Top

Bottom

CATEGORY LISTINGS > LISTER-PETTER

[ REFRESH ]

Customer Testimonials

'Sold my engine within weeks of listing - thanks for your help!'

Dennis Robb, Annapolis, MD, USA

'It took at least 4 weeks before we got our first inquiries for the 28 engines we listed - 3 months on we are making 3 to 4 sales per month! We're really pleased and I like the feature that shows how many views our engines get.'

Pete Melhuish, Northwest Diesel Parts, Portland, Oregon, USA

'Sold one of my Detroit engines via DieselEngineTtrader.com and it was to a local guy!'

Wil Tiefenbacher, United Lock-Block , British Columbia, Canada

DieselTalk

Hunting

Customer Testimonials

Newsletter