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firing / compression sequence diesel
Posted: Sun May 05, 2013 10:29 am
by helen&tony
Hi
I've looked through the manual. but I can't see the ignition(compression) sequence anywhere?
Cheers
Helen
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 12:36 pm
by mikexgough
4 cylinder diesels are commonly 1-3-2-4 for balance purposes....not set in stone though
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 1:23 pm
by helen&tony
Hi Mike
I presumed that, but I couldn't see it anywhere...thanks...It seems more logical than the 1342 of a number of petrol engines, and a better balance....I'll also see what can be found for the Ranger engine
Cheers
Helen
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 1:35 pm
by coisty
From Autodata, Ford RANGER 2.5TD WL-T. 1-3-4-2. Might be worth double checking.
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 2:20 pm
by scanner
mikexgough wrote:4 cylinder diesels are commonly 1-3-2-4 for balance purposes....not set in stone though
How does 2 manage to fire before 4 without 4 missing a stroke?
Surely it always has to be "1 outer" - "3 inner" - "4 outer" - "2 inner" unless the pistons are "1 up" - "2 down" - "3 up" - "4 down" instead of "1 up" - "2 down" - "3 down" - "4 up"?
Or am I missing something?
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 2:30 pm
by helen&tony
Hi
Firing sequences have changed over time dependent on crank configuration...however...some perusing:
https://www.google.bg/search?q=firing+o ... 20&bih=965
Cheers
Helen
P.S. Thanks COISTY
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 2:36 pm
by rita
Do you know the rotation of the pump.?
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 3:16 pm
by helen&tony
Hi
Rita...
I looked in the manual...couldn't see that, but I may have missed it...however, I more or less know what I need now!....thanks to the Ranger info from Coisty...All I got from searching was page after page relating to Ford America
Cheers
Helen
Re: firing / compression sequence diesel
Posted: Sun May 05, 2013 6:41 pm
by scanner
With an up down down up crank it has to be 1342.
Stick with 2 cylinder engines, they are 1-2 1-2 1-2 whatever the crank configuration
Re: firing / compression sequence diesel
Posted: Mon May 06, 2013 12:52 pm
by mikexgough
4 cylinder firing can only be 1243 or 1342. The later mainly is common especially for petrol motors, the former was used on Ford Kent Engines and others in the Ford stable too.
The WL-T engine has 2 balance shafts to smooth out vibrations which 1342 usually prevents unless the engine stroke is such that it promotes vibration and balance shafts can be used too.
As for the Ranger WLT.... Looking through my engine manual I haven't found the sequence listed, It shows the difference between WL & WL-T as well as what parts are used on WL-C engines.
Re: firing / compression sequence diesel
Posted: Mon May 06, 2013 1:38 pm
by helen&tony
Hi Mike
Yes, as you said first off...the sequence is not set in stone...and as you say, there most definitely ARE different firing sequences...I remember the second 4 cylinder straight engine I took apart being a different firing order, but that was some years back
Well, yes to the other point...I couldn't find the firing order in the engine manual either...
Single cylinder motorbikes are the easiest ones for me to work out!
OR...for the discerning...a single-cylinder marine hot bulb diesel...YUM
Cheers
Helen