this might get a bit long winded but worth it if you need injectors cleaned
so we recently picked up a 1998 270 SE that the last owner had been going through a divorce and life in general, but no longer had time or desire to take the boat out. had been sitting for 2 or 3 year with some fuel in the tank and rails. when we took the boat out for a sea trial we noticed it could only pull to 3200 RPM, and had a pretty bad miss. so we replaced the plugs, wires, fuel filter, and cleaned up the cap and rotor since we couldnt get another cap that day. it cleaned up the idle but still had the miss at 3200. compression test showed even numbers across all 8 holes. so i turned my focus to the fuel system, knowing it had some suspect gas in the tank left over missed in the with the fresh 93 we added. after we purchased the boat tear down began. pulled the plenum on the MPI and pulled all 8 injectors out and reached out to a guy ive known though drag racing for a number of years who cleans and flows injectors.
right off the bad i noticed a lot of crud in the injector baskets. so i knew they weren't happy to start with. never knew how bad 1 of them REALLY was. out of the 8 injectors 3 were half way decent. 4 of them MIGHT have been able to flow 50% of what they were expected to flow. and 1 of them was 100% zero fuel flow. so after a quick bath in an ultra sonic cleaner new baskets and o rings, 7 of the 8 were all flowing within a few CC of each other. the 1 that had zero flow still showed the coil was good and not putting out strange readings on the flow bench. so back in the ultra sonic bath it went. all kinds of rust and dirt comes flowing out of the injector again. back onto the bench. still nothing.... at this point i really expected him to say it was bad and just replace the injector. BUT he stuck with it and refused to let the injector beat him. fast forward about an hour of cleaning and cleaning the fluid in the ultra sonic bath... TWICE! back onto the flow bench it went, we had some flow! nothing to write home about number wise but it was working! BACK into the bath it went. little more gunk came out but nothing major. back onto the bench, flow numbers were a bit better so he let it run just to let it clear itself out.
onto the flow test...
at 7K RPM (WAY past what that MPI will ever see RPM wise) all 8 injectors flowed within 5CC of each other.
i can not say enough about the service from this shop!
attached is the before test when i first pulled the injectors out.
https://www.facebook.com/injservice/
so we recently picked up a 1998 270 SE that the last owner had been going through a divorce and life in general, but no longer had time or desire to take the boat out. had been sitting for 2 or 3 year with some fuel in the tank and rails. when we took the boat out for a sea trial we noticed it could only pull to 3200 RPM, and had a pretty bad miss. so we replaced the plugs, wires, fuel filter, and cleaned up the cap and rotor since we couldnt get another cap that day. it cleaned up the idle but still had the miss at 3200. compression test showed even numbers across all 8 holes. so i turned my focus to the fuel system, knowing it had some suspect gas in the tank left over missed in the with the fresh 93 we added. after we purchased the boat tear down began. pulled the plenum on the MPI and pulled all 8 injectors out and reached out to a guy ive known though drag racing for a number of years who cleans and flows injectors.
right off the bad i noticed a lot of crud in the injector baskets. so i knew they weren't happy to start with. never knew how bad 1 of them REALLY was. out of the 8 injectors 3 were half way decent. 4 of them MIGHT have been able to flow 50% of what they were expected to flow. and 1 of them was 100% zero fuel flow. so after a quick bath in an ultra sonic cleaner new baskets and o rings, 7 of the 8 were all flowing within a few CC of each other. the 1 that had zero flow still showed the coil was good and not putting out strange readings on the flow bench. so back in the ultra sonic bath it went. all kinds of rust and dirt comes flowing out of the injector again. back onto the bench. still nothing.... at this point i really expected him to say it was bad and just replace the injector. BUT he stuck with it and refused to let the injector beat him. fast forward about an hour of cleaning and cleaning the fluid in the ultra sonic bath... TWICE! back onto the flow bench it went, we had some flow! nothing to write home about number wise but it was working! BACK into the bath it went. little more gunk came out but nothing major. back onto the bench, flow numbers were a bit better so he let it run just to let it clear itself out.
onto the flow test...
at 7K RPM (WAY past what that MPI will ever see RPM wise) all 8 injectors flowed within 5CC of each other.
i can not say enough about the service from this shop!
attached is the before test when i first pulled the injectors out.
https://www.facebook.com/injservice/
