Y you need ur fueling check

Chris@CCM

Chris@CCM

Member +
well i see this so much now days ppl uping the boost with out checking fueling with a wide band in the last month ive had 3 engines with 3 broking pistons each. just though i would post up a pix to show what happens if ur car runs too lean

note the 3 engines were not mine lol

glanzapistonsbd7.jpg
 
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Jay

Jay

Admin
Just to note, mine weren't damaged as a result of a lean fuelling. It was lean reasoning that blew them. :haha:
 
GTnomez

GTnomez

Member +
howd you know if you have RAN lean?? just say you got the fuelling checked but still ran about with it unchecked but the car drove fine still. any way to tell?
 
G

Glanza_K31

Member +
GTnomez said:
howd you know if you have RAN lean?? just say you got the fuelling checked but still ran about with it unchecked but the car drove fine still. any way to tell?
Click to expand...

Couple of simple ways but obviously getting a wideband air/fuel meter would be best:

After a some heavy driving you can either check the fumes of the exhaust stinks of petrol = overfueling, stinks of a rather bitter stench that stings your eyes = lean lol OR you can check your plugs again after some full throttle driving but be careful as its obviously hot. If i remember correctly reason for driving first is to get a lil more accurate reading.

There is a spark plug chart you can compare to, search forum.

Just to mention im not 100% sure i am correct so others please feel free to disagree.
 
dantheman

dantheman

Member +
how did you manage to do 3 engines in a month? did you not think of getting the fueling checked after the first engine failed? :p
 
Phil

Phil

Super Moderator
Jay said:
learning from your mistakes is boring, hurry with that engine chris i want to do it again, only better!?
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steady, dont be so angry at the trackcar it has earned its lofty 80pound valuation! lol :haha::drive::drive::drive::drive::drive::drive:

Phil
 
dantheman

dantheman

Member +
was ganna say LOL it reads like all 3 engines were yours :haha: what boost were they running? any fueling mods?
 
Chris@CCM

Chris@CCM

Member +
dantheman said:
was ganna say LOL it reads like all 3 engines were yours :haha: what boost were they running? any fueling mods?
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1 was 1.4 bar on a blitz ecu other was 1.3 bar with just a jam fcc lol the other was jays but he did not run lean just went mad with it on about 10 track days lol
 
Jay

Jay

Admin
Another snippet - as Chris states, you cannot rely on the plugs to indicate fuelling seeing as these cars run lean off boost. You would ideally need to switch off the engine immediately after boosting to see any fuelling results on the plugs. Even then it's much easier with a wideband.
 
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