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    Plug wires and oil filter

    Hello I have a 1998 mercuries 350 EFI MPI Engine Serial OL067176 Sterndrive OL153367 Can someone please advice original plug wire and oil filter stock number or a Sierra part number or an auto store part number that is the equivalent Thanks in advance Claudio
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    How to hook up an ACR to an inboard

    Hello, I need a little help making sure I do it correctly. I currently have a four position perko switch. Two batteries, one deep cycle and the other starting. I would like to archive the following, 1) hook up the house panel to the deep cycle battery and 2) use the starting battery only to...
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    Timing instructions

    Good morning, I have a 1998 mercuries 350 EFI MPI Engine Serial OL067176 Sterndrive OL153367 I will attempt to check my own timing this evening. Is there a bulletin on here that will help me? Also, what two wires do I need to bridge to put the engine in test mode? I've been told to set at...
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    Bogs down during take off and slow to get out of the hole

    Hello I have a 1998 mercuries 350 EFI MPI Engine Serial OL067176 Sterndrive OL153367 I recently had the timing set, changed spark plugs, rotor and distributor cap. During acceleration, I noticed she bogs down from idle thru full throttle which makes it getting out of the hole a little slow...
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    Tune up

    Re: Tune up Thank you Don. I found this in my book. Can anyone re-confirm that that's the firing order for my engine. Also, is the distributor cap marked? If so, what will the mark indicate?
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    Tune up

    I have a 1998 mercuries 350 EFI MPI Engine Serial OL067176 Sterndrive OL153367 I recently had the timing checked by the mechanic and they said it was good and she was running good. I replaced distributor cap, rotor and plugs today and I will replace the wires tomorrow. The old spark plugs...
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    What would you do?

    I have a 1998 mercruiser 350 magnum EFI MPI with 370 hours on it. The ignation coil, ignation module, distributor cap and rotor are the original parts and in working order. The spark plug wires are four years old and seem to be in Ok shape. I am trying to stay a step ahead and avoid...
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    Voltage

    I have two batteries hooked up to the switch. One is a starting and the other is a deep cycle. I noticed that when I am running the boat, the voltage meter on the dash reads over 18. Is this effecting the boat's performance?
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    Stalled and would not start

    Hello I have a 1998 mercuries 350 EFI MPI Engine Serial OL067176 Sterndrive OL153367 2 weeks ago I went for a cruise on the boat and she ran very rough. I opened a ticket for the mechanic to look at it since they set the timer last.m I thought it was a timing issuing perhaps it wasn't set...
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    Spark plug wires

    I have a 1998 350 mag EFI Engine Serial OL067176 Sterndrive OL153367 Which Sierra wire part number should I order?
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    Spark plugs wires

    i have a 1998 350 mpi EFI Engine Serial OLO 67176 Sterndrive OL153367 which wire set do i need? can i buy them at Auto Zone? C
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    i need help - loud knock slow to reach top speed?

    all, 350 magnum 1998 efi mpi mercruiser with bravo drive yesterday the mechanic adjusted the timing on the boat. the boat ran great when he ran it, however today i take the boat out and i have the following issues: 1) occasional knock from the engine room 2)hard to plan out 3)would not come...
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    She won't start

    '98 350 mercruiser MPI EFI with bravo drive i just put her all back together after installing a new intake manifold. yes, the rotor was pointing to the one plug. she turns over beautifully but wont crank. do i need to adjust the timing while i have the key on? i have installed a new...
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    spark plugs

    is there such a thing as a marine spark plug? are the ones from your local auto store the same as the ones you get a marina? claudio
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    Cracked Intake Manifold

    i have a '98 i/o 350 mercruiser v8 efi. i noticed some water around where the thermostat and the intake manifold bolt together. after looking at it closer i noticed the intake is cracked. is it possible to use an epoxy to fix it? if so, what product do i use? thank you claudio
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    stalled in neutral

    '98 350 mercruiser magnum efi boat cut off when it came off plane. i was able to crank it and made it to the dock. before leaving the marina i decided to crank it one more time, I revved it up and when i pulled the throttle back in neutral she cut off. what could it be? i also noticed...
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    Battery help before heading out on the water today

    Good morning, i have a '98 2200 sx stingray with a 350 magnum... i have two batteries, one crank (Advance Auto part brand) and one dual purpose (interstate) hooked up to a battery switch. while docked on the water, i usually play stereo hooked to 4 speakers and an amp all of which run off the...
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    universal wired remote

    hi, i have a sony stereo Model: CDXGT660UP and i was wondering if there is a brand i could by other than a "sony" transom wired remote. reasons being is that the cut out on the sony remote is nearly 4 inches. i don't like that. basically looking for one that has a smaller cut out. thanks...
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    New Alternator needed

    '98 mercruiser 350 Magnum efi yesterday while on the water my alternator went out. i have a 65 amp out put alternator (stock). since i need to buy a new one, should i increase the amount of amps out put or stick with a 65 amp...? i currently run two batteries and a stereo amplifier. any...
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    high idle

    hi there. i have a 1998 mercruiser i/o 350 magnum efi that is idling high. while at the dock waiting for the engine to warm up it idled high but constant in the 1100 -1200 range. after she reached proper temp i went for a spin. i ran the boat for about 5 minutes and she was fine. however...
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