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This "do-it-yourself" Engine Health Check is designed to help you decide on simple corrective treatments based on the symptoms your engine usually shows .. please see the "Check Table" below.

Some problems can be best treated with more than one product, plus other things, such as making an adjustment or replacing a worn part.

There may be factors contributing to the symptom(s) that are not listed in the "Check Table" below under “Other considerations”, so if you are in doubt please email us (we may take a few days to reply), or contact your engine specialist. 

Please note: Neptune Products are harmless to engines and machinery when used as directed on the product labels, but Neptune Products will not restore worn components .. please see our latest GOOD NEWS

Please take care when working around your vehicle, or machinery .. make it safe, before you do it.

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FREE "do-it-yourself" Engine Health Check .. 

 

"Check Table" key :

FOC = DeSLUDGE Flushing Oil Concentrate; FTC = catalytic engine decarboniser; fuel additive; SS  = SupaSLIP anti-friction, oil and hydraulic fluid additive.  The more stars (X) the more suitable the product may be to reduce or remedy the cause of the symptom.  Some problems can be best treated with more than one product, plus the use of other things, such as replacing a worn part.

Engine Health Check table ..

Engine SYMPTOM		FOC	FTC	SS	Other CONSIDERATIONS
Smoke .. BLACK	article	XXX	XXX	X	Worn fuel injectors,  fuel & valve timing, fuel/air ratio, turbo, dirty air filter, xs load, hull/prop fouling, wrong gear, high altitude
Smoke .. BLUE	article	XXX	XXX		Worn cylinder or piston  rings, wrong grade oil
Smoke .. WHITE	article	XXX	XXX		Worn fuel injectors,  fuel & valve timing, air leak
Blow-by		XXX	XXX		Worn cylinders, rings
Diesel pump leak			XX		Worn, distorted, perished, shrunk seals
Engine overheating	article	XXX		XX	Fan belt, radiator, heat exchanger, sea-cock, water pump, hoses, head and gaskets, thermostat, low rpm, xs load
Fuel consumption	article	X	XXX	XXX	Fuel & valve timing, tyre pressure, brake binding, hull/prop fouling, high altitude, load aerodynamics
Hard to start	article	XX	XXX	X	Fuel & valve timing, low battery, faulty "glow"  or  sparking plugs, low compression
Noisy, sticky tappets		X		XXX	Adjustment, low or wrong oil
Noisy transmission				XXX	Worn components, low or wrong oil
Oil (engine) very dirty, sump sludge		XXX	XXX		Wrong oil grade, oil change period
Oil consumption	article	XXX	XXX	X	Wrong oil, worn components
Oil leaks		X	XXX		Faulty or worn seals, "blow-by"
Oil appears milky					Change oil, coolant gasket leak, cracked head
Lost performance	article	X	XXX	XXX	See fuel consumption
Rough idle			XXX	X	Timing, electrical  fault
Sticking autotrans				XX	Low or incorrect fluid, faulty or worn part, mechanical damage
Sticking power steering				XX	ditto, drivebelt slip
Wear metals in oil	article		XXX	XXX	Air filter, dust, wrong oil

You may like to be one of the first to read about a major breakthrough in reducing air pollution from diesel engines, by using the new DD-STROBE ^® diesel fuel injection timing light.

We hope you found this Engine Health Check useful .. if so, please tell a friend.

If you have any suggestions to improve this Engine Health Check, please contact us.


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Photo is of Brett, our senior technical advisor on diesel engines.