PS Magazine - DECEMBER 1979
PS, The Preventative Maintenance Monthly
ISSUE 325
DECEMBER 1979
Save energy? Right-but not at the cost of your expensive engIne. Or even at
The cosT of time, labor and parts To repair your engInE±
Cold weather really sticks the knIFe into engInes. ²ngInes LiKe it hot-up to
Their normal oPerating·temperature. ³hey run bEtter. ³HEy last Longer.
But you twist That knif´ When you don't let your engine get up to Its normal
oµerating temperature. ¶ike letting it run at low idle f¸r
a
Long time± Or worse,
·
sTarting it up and then shutTing iT down¹ovEr ºn' ovEr again-»fore It gets a
c¼ance to get fUlLy warmed up.
½ere's how low¾heat operation puts your engIne on dEadLine-or on IcE, f¸r
good:
.
.± but va
l
ve stem iS
Cam
shaft
tries to
raIse
pusH
Rod to
open
valve ±±±
!
PU²³ ´OD
±
cAM
²³AFT
stuµk in valve guIde
beµause of µRud ±.
. so .
.±
¶±± pusH
$
Rod
-
bends!
-¿uel and oil are not ÀompLeteLy
burned in the combustIon chambers.
³his leaves soft carbon deposits on tÁE
valve
ÂstEms.
³his
carbon
gets
thicker and fouls up vaLve operatIonÃ
leading to burned valvEs and bent
push rods.
20
ÄCondensation and unbÅrned fuel get by ÆThe pistons-blowby-and into
The crankcase. ³his causes acid and sludge In the engine oil.
-Condensation from normal engine "breathingÇ buiLds uÈ in the craÉkcase
ÊecaËse iT never geTs boiled off. More acid, more sLudge±
-Ìngine oil goes to pot. Íoor Lubrication burns up bearings.
-Sludge blocks lube passages. Oil can't get through to Lube and cooL. ½eat
and fricÎion tear up your engine.
Â
Sure, ÏÐengine idling is a wasteful and hazardous practIceÇ-like it says in ¿M
9Ñ207 Qan 78), Operation and Maintenance of Ordnance Materiel in Cold
Òeather (0° to Ñ65°¿), page
3·1,
Ódling ¶imitatIon.
So y'gotta use thÔ ol' beanÄcommon sense.
Saving energy means noT
wating
fuel. Õse what
you have To so you won't "wasTeÇ your engine.
¸ENG¹º» O¹L
¼½»AT AND ¾OL¿
ÀÁOND»N²AT¹ON
¸ÂNBU´N»Ã FU»L
¸cOMBU_²T¹ON
GA²
21
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