Bluestar 6K black smoke

[Navyned]

Runs fine but when putting a load on it either air compressor or trying to weld it starts to bog down, then it kicks the choke to full and shuts down. If I try and hold the choke open it just lugs the engine down and shuts off. Honda 13Hp engine. Replaced the carb but no change. Any ideas? Runs about 130Vac on no load.

[cruizer]

Lack of compression, thus no torque on the heavier loads. Likely culprit initially was the incorrect oil. Probably used automotive oil not air cooled motorcycle oil. Now the cam lobes are likely rounded off. You need the Zinc And Phousphous to lube the cam and crank, not found in automotive oil

[nfinch86]

Cruizer- You are not suggesting I run motorcycle oil in my Ranger 8 , are you, as I'm getting Black smoke sometimes too ?

Norm

[cruizer]

Well, YEAH, all air cooled engines need zinc and phosphorous to lube the cam and crank. Automotive oils don't have any. Might as well run the engine dry for all the good automotive oil is doing.... Diesel engine oil works well too.

[nfinch86]

What do you recommend then ? Any brand name or grade of oil ?
Diesel oil in a gas engine ?

Norm

[MMW]

I run Brad Penn oil in all my air cooled stuff. Has a high zinc/phosphorous content. I just get it on ebay by the case.

[Aeronca41]

On Cruizer's advice, I run Quaker State Defy in my old Onan-powered Trailblazer. High Zinc content.

[nfinch86]

So MMW & Aeronica41 are you both running Motorcycle Oil ( Quaker State ) ?

Norm

[Aeronca41]

QS Defy is car oil but has high zinc content for older engines. I get it at Walmart.

[H80N]

QS Defy is car oil but has high zinc content for older engines. I get it at Walmart.

I also like Rotella T diesel oil... has the zinc, sulpher & phosphor....... Sams Club by the case...... AeroShell is good too....

[MMW]

I copied this from the Jegs catalog. Also available from Summit & many other performance places. Like I said I order it on ebay, Here is the link for where I get it. I use straight 30w. Works well for anything with flat tappet cams. Most older vehicles need a high level of zddp.

http://www.ebay.com/itm/BRAD-PENN-GR...SMWEXQ&vxp=mtr



Brad Penn ''Penn-Grade 1'' High Performance Oil

Product images may differ from actual product appearance.

Outstanding Anti-Wear Protection for Muscle Cars, Classic Cars, Race Cars and Trucks!

Brad Penn ''Penn-Grade 1'' High Performance Oils are composed using unique base cut "Green Oil" stocks from Bradford, Pennsylvania with select additives to meet the stringent lubrication demands of highly stressed street and racing engines. The benefits of this special formulation are minimized wear, excellent shock load and high-temperature protection for bearings, rings, and pistons. Brad Penn ''Penn-Grade 1'' High Performance Oils have also been tested by many premier camshaft suppliers. The results of the testing have proven that this oil reduces internal friction for increased horsepower while maintaining outstanding lubricating protection for flat tappet and roller cams even under extreme conditions. The additive package in Brad Penn ''Penn-Grade 1'' High Performance Oils feature increased levels of ZDDP (zinc dialkyldithiophosphate) that provide excellent anti-wear protection. Anti-foam agents are employed to reduce foaming and air entrainment produced from crankcase windage. This oil also uses highly effective detergents, anti-oxidants and dispersants to offer thermal and oxidative breakdown protection by reducing varnish and deposit formation.

Features:

• Formulated with Concentrated Zinc Dialkyl Dithio Phosphate (ZDDP)
• Exceptional Film Strength and Durability
• "The Green Oil" Preferred by Legendary Engine Builders
• Refined and Made in the USA

[Meltedmetal]

http://www.quakerstate.com/CA/CA/motor-oil/defy

[nfinch86]

http://www.quakerstate.com/CA/CA/motor-oil/defy

Thanks man; I see now.

[nfinch86]

Lack of compression, thus no torque on the heavier loads. Likely culprit initially was the incorrect oil. Probably used automotive oil not air cooled motorcycle oil. Now the cam lobes are likely rounded off. You need the Zinc And Phousphous to lube the cam and crank, not found in automotive oil

Cruizer, If I'm not mistaken you have said on here many times to use Quaker State 5W 50 " Motor Oil ". Am I Incorrect ? Where did this " Motorcycle Oil come from ? I've got " Less " than 800hrs. on my welder.

Also, since I bought my Lincoln Ranger 8, with 55Hrs. on it, I've Only used Castrol Synthetic motor oil , can I start to use Quaker State 5W 50 conventional oil or should I use Motorcycle Oil ?

Norm

[nfinch86]

Cruizer, If I'm not mistaken you have said on here many times to use Quaker State 5W 50 " Motor Oil ". Am I Incorrect ? Where did this " Motorcycle Oil come from ? I've got " Less " than 800hrs. on my welder.

Also, since I bought my Lincoln Ranger 8, with 55Hrs. on it, I've Only used Castrol Synthetic motor oil , can I start to use Quaker State 5W 50 conventional oil or should I use Motorcycle Oil ?

Norm

Bump