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Unread 07-02-2013, 04:26 PM
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Get a mechanic to look at it before you use it hard. Its very easy to lean out a cylinder and blow the powerhead
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Unread 07-02-2013, 04:39 PM
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http://www.harborfreight.com/90-inli...ker-69023.html

i'd pick up one of these at harbor freight or o'reilys, pepboys etc. check fire at idle.
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Unread 07-02-2013, 08:21 PM
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Are you sure on the year? Not many EFI engines in 90 from MERCURY except for the high end performance engines. Start with the basics, check compression, spark, timing, and if it's an EFI engine you should probably send the injectors out to BROCATO or somebody for cleaning and flow testing as well as adjust the TPS.
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Unread 07-09-2013, 06:27 AM
Hal380 Hal380 is offline
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I checked the year and it is a 2000. I solved the problem and things are running smoothly. I am embarrased as hell to admit it but the problem was that when I changed the plugs, 2 of the 6 plug connectiors were not fullly seated on the spark plug. I admit that I had to really push hard to get the 2 leads to snap into place, but once that was done the engine starts right up and idles smoothly.
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