wholesale
16.06.2021 22:44:45
The top one uses standard plug. NGK-DPR6EA-9 and no Iridium GAP is .035
The bottom uses standard plugs NGK-[FONT=Arial, Helvetica, sans-serif] DCPR7E and Iridium DCPR7EIX. GAP is .031 [/FONT]
See full version: Spark Plug Gap 50HP Merc
The top one uses standard plug. NGK-DPR6EA-9 and no Iridium GAP is .035
The bottom uses standard plugs NGK-[FONT=Arial, Helvetica, sans-serif] DCPR7E and Iridium DCPR7EIX. GAP is .031 [/FONT]
Trying to verify what model of NGK spark plugs to use. more
[FONT=Arial, Helvetica, sans-serif] Mercury parts catalog is saying NGK-DPR6EA-9
I'm just confused if I can use or should use the Fourstroke EFI with no year listed Iridium plugs? [/FONT] more
Re: what spark plugs to use for Mariner 2 stroke 50 hp
I recently bought a older boat with a mariner outboard. As it has starting problems, I cleaned the carburators. I pulled the spark plugs - eeeek!
I am really doubting if it were the right plugs in the first place, so i do not want to blindly replace them. Anybody knows what plugs it should have?
Thank you foaks for the info - this afternoon i went to the shop with the old champion plug (L75V) and indeed they recommended the equivalent of NGK: BUZHW. I just wanted to be sure the right plugs were installed in the first place. here
(2 stroke, 4 cylinder engine)
Ensure the spark plug wires are properly connected. Inspect the entire wire, from the plug to the magneto beneath the armature plate. Try to remove the spark plugs by hand the ensure the plugs are properly seated. Use a spark plug wrench to remove the plugs, one at a time, and tag them to identify the cylinder in which they were installed. Inspect the plugs. here
Replace the spark plugs in the bores from which you removed them, if they are in satisfactory condition. Tighten them to the proper torque with a torque wrench. Hold the plug wire about 1/4 inch from the powerhead, not over the spark plug. Turn the motor over one time only, either with the recoil starter or the electrical starter. [links]
If an outboard motor is "missing," that means that the spark required to ignite the fuel and air mixture from the carburetor is either weak or absent altogether. This means that you are wasting one cylinder's worth of fuel with each full revolution of the motor's flywheel. Either the spark plug is damaged or no power is reaching the plug. Since you can't climb inside the cylinder and watch each spark plug in action, you must check the spark outside of the motor. [links]
Watch for a spark and observe its character. A good, strong spark means the air and fuel mixture in the cylinder will be ignited properly. Repeat this for each spark plug wire. If a one wire sparks well, but another does not, the system is weak; a weak spark or no spark means the magneto is at fault and should be replaced. more
I would run the plug that is called for. Mercs almost always call for NGK plugs, as they perform better with them. I am somewhat suprised that the mechanic advised champion plugs for your motor. If it was mine, I'd run the NGK's that were mentioned above as the correct ones. more
Thank you. I have been running these champion plugs in my merc since the powerhead has been overhauled . They were recomended by my mechanic. He has since moved out of state so I have to change the plugs myself because I havnt found another mechanic I like yet. And again thanks for your time.
So should not be running these plugs in my engine? The champion?
Re: Spark Plug Gap on Mercury [links]
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