Search results

  1. C

    carb running lean

    How do I fix a carb that is running to lean? I took them off and they seemed clean jets where clean so i put new gaskets and needle seat in. What size jets should I have in there? 1989 Johnson 70 horse J70TLCEM. <br />Thanks <br />Chad
  2. C

    70 johnson blow up

    Well I was out in south Dakota this last weekend and the middle cylinder siezed so it is time for a rebuild I took the power head apart and took the block and head to get machined. so what could have caused this to happen so I can fix it so it doesn't happen again? It seemed it was getting oil...
  3. C

    6100 RPM

    I currently run a 13 3/4 x 15 pitch prop on a 70 horse Johnson and I am running at 6100 will a <br />13 1/4 x 17 be better the book says I should be at 5000 to 6000 WOT I am not looking for speed but Just so the motor runs where it is suppose to.<br />Thanks <br />Chad
  4. C

    How Hot

    I checked my 89 70 horse Johnson with a laser heat gun and it showed 159-162F for all three cylinders is that good? I was running it with muffs what should it be running at?<br />Thanks Chad
  5. C

    Which tach to get?

    I have a 89' 70 horse Johnson model J70TLCEM and need a tach where and which one should I get?<br />Thanks <br />Chad
  6. C

    Prop

    I have a 1990 Sylvan profish 16 foot with 1989 70 horse Johnson. I have a 13 3/4x15 aluminum prop. Is this the correct prop for this boat and motor? I don't have a tach or mph gauge and I am not worried about the top speed I just want it to ride and get on plan nice. Now it bounces at full...
Top