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Dominick
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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I have a 2000 175.it idles fine but cant get any speed out

Customer Question

I have a 2000 Johnson 175.it idles fine but cant get any speed out of it
Submitted: 5 months ago.
Category: Boat
Expert:  Jason replied 5 months ago.

Hello my name is ***** ***** am I speaking with?

What is the model number on the engine?

When was the last time the engine made full power, have you ever personally seen it make full power under a load?

How old is the fuel?

Have you done any testing on your own yet?

Customer: replied 5 months ago.
my name is***** was going across the lake fine then it just died
Expert:  Jason replied 5 months ago.

Hi Charles.

What is the model number on the engine?

Customer: replied 5 months ago.
its a 2000 Johnson 175
Expert:  Jason replied 5 months ago.

Hi Charles.

I'm not going to call you unless I know the exact model number of the engine. I need to know that just to know what you have...

Customer: replied 5 months ago.
j175plssc
Expert:  Jason replied 5 months ago.

Got it.

The next thing is what kinds of questions did you have for me?

Customer: replied 5 months ago.
cant get high speed
Expert:  Jason replied 5 months ago.

You wrote that it died. Is the engine running or not?

Customer: replied 5 months ago.
it idles but I cant get any speed out of it.the last time I had it at the lake I was going along fine then it died and stoped.i was able to get it to idle and get it back to the dock
Expert:  Jason replied 5 months ago.

When was the last time the engine made full power, have you ever personally seen it make full power under a load?

How old is the fuel?

Have you done any testing on your own yet?

Customer: replied 5 months ago.
like I said it was running at full power for at least 20 min then died.i been to the lake 3 time with it working fine and put in a half a tank of new fuel
Expert:  Jason replied 5 months ago.

Have you done any testing on your own yet?

Customer: replied 5 months ago.
all Ive done is tried to get it to run at home but it wont get full power unless I manual advance the timing
Expert:  Jason replied 5 months ago.

Step one is to check spark output on all 6 cylinders with a timing light or adjustable gap spark tester. Is that something you can do?

Customer: replied 5 months ago.
I don't have I timing light but I did change all plugs and gaped them
Expert:  Tan replied 5 months ago.

Hello. My name is Tan.

Can you get an adjustable spark gap tester from the auto parts house?

Here's an example of a spark gap tester. We must determine if you have spark on all cylinder or not. http://www.nationaltoolwarehouse.com/Ignition-Spark-Tester-with-Adjustable-Gap-P41027.aspx?zmam=31282435&zmas=50&zmac=750&zmap=THX404&gclid=CjwKEAjwkPS6BRD2ioKR7K245jASJAD1ZqHOpYxiCmpu4LvK4gTBZ4BpH249ZKou9xOb-97ok-lJ9BoCK7rw_wcB

Even if it runs we still need to determine if you have spark on all or some cylinders. Then we have an idea of where to start.

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