Why is my Mercury 60 not passing 3000 RPMs?
If you don’t have spark in one cylinder and it is being dragged along for the ride, you should be able to see that in one of the plugs. Checking compression in all cylinders is also a good idea. I’m with Muskie on this one. You should rule out low gas pressure. Partially plugged fuel filter, moisture separator etc.
Why does my boat not run at 3000 rpm?
(Had my boat in a very damp garage and didn’t use it for quite some time (had a fairly empty tank). Been using Merc “Quickare and Quicklean” additive since then. Try changing sparkplugs. The fogging oil that is used to winterize the boat may have fouled a plug or two. Could also be fuel filter related, if equipped with one.
Why is my 5.7 MerCruiser stalling out and dying?
At idle I am sitting at about 750 RPM and it holds there with no issues Engine temp last night was 170 degrees Things I have done before putting it in the water New Plugs, D-Cap, Rotor, Wires and a new fuel water separator.
What causes a car to stop at 3000 rpm?
Checking compression in all cylinders is also a good idea. I’m with Muskie on this one. You should rule out low gas pressure. Partially plugged fuel filter, moisture separator etc. Also, newer motors go into “safe mode” if they sense a problem (over heat, low oil, etc.) they limit the RPM to protect the motor.
Can a motor rev freely un-loaded at 3000 rpm?
A motor can rev freely UN-loaded, but as load raises so does the demand for a high intensity spark. DVA test the high speed windings of the stator AND also verify spark using an inductive timing light or an inductive tach while under load at the max RPM the motor will pull.
What kind of car won’t go over 3000 rpm?
The motor starts and idles fine, but in gear will not rev above 3000rpm. Compression checked out ok, 135-135-138 psi. carbs were rebuilt. 2 coil- 214v., 3coil- 213v.
At idle I am sitting at about 750 RPM and it holds there with no issues Engine temp last night was 170 degrees Things I have done before putting it in the water New Plugs, D-Cap, Rotor, Wires and a new fuel water separator.
Why does my mercury not accelerate past 3000 rpm?
Compression, you’ve nailed that one down, all looks fine as far as ring seal. Ignition, still undetermined, DVA testing stator output and/or verifying spark on all cyls when the problem arises still needs to be done. A motor can rev freely UN-loaded, but as load raises so does the demand for a high intensity spark.