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Lou C reacted to DeepCMark58A's post in the thread Found bolt in 4.3 bilge. Please help identify with Like.

I love it when the OP reports the outcome I appreciate it. I don't even have a mercruizer I just like reading along.

Jun 29, 2026
Lou C replied to the thread 1984 3.0 cobra.

I looked the OMC catalog on marineengine.com and oddly they list everything in the valve train except the hydraulic lifters, but Merc...

Jun 29, 2026
Lou C replied to the thread 2003 Crownline oil reservoir fitting.

It's similar to what you see throughout Merc cooling systems, many plastic parts, all prone to getting brittle when the boat gets on in...

Jun 29, 2026
Lou C replied to the thread 2003 Crownline oil reservoir fitting.

The dipstick in the top cover in the pic above, that's exactly how every OMC Cobra and Volvo SX ever made is, dipstick in the top cover....

Jun 29, 2026
Lou C replied to the thread Help! Bought a 1993 Four Winns W/ 5.0 OMC Cobra Motor and Drive - Losing power after crusing.

Great so how does your oil look?

Jun 28, 2026
Lou C replied to the thread Found bolt in 4.3 bilge. Please help identify.

Once in a while I explore the nether regions of my boat's bilge with the inspection camera and a magnetic pick up tool. I was surprised...

Jun 28, 2026
Lou C reacted to nola mike's post in the thread Found bolt in 4.3 bilge. Please help identify with Like.

I've found enough hardware in my bilge over the years to dress a whole other motor. And enough tools to make it happen.

Jun 28, 2026
Lou C reacted to ShoalSurvivor's post in the thread Found bolt in 4.3 bilge. Please help identify with Like.

Good news - all three coupler bolts are still in. Better news! Found it! It was the 3rd bolt holding the power steering pump to the...

Jun 28, 2026
Lou C replied to the thread Help! Bought a 1993 Four Winns W/ 5.0 OMC Cobra Motor and Drive - Losing power after crusing.

PS do you have a manual? It would help a lot that’s how I learned most of what I know. You can still get factory shop manuals the OMC...

Jun 27, 2026
Lou C replied to the thread Help! Bought a 1993 Four Winns W/ 5.0 OMC Cobra Motor and Drive - Losing power after crusing.

You get a pot of water, a coat hanger and an old fashioned radiator thermometer; they read up to 240* or so. Fill the pit with water and...

Jun 27, 2026
Lou C replied to the thread Help! Bought a 1993 Four Winns W/ 5.0 OMC Cobra Motor and Drive - Losing power after crusing.

Backfires could be lean fuel mix (clogged injectors) or an intake valve sticking open. Did you check your thermostat? It should start...

Jun 27, 2026
Lou C replied to the thread Help! Bought a 1993 Four Winns W/ 5.0 OMC Cobra Motor and Drive - Losing power after crusing.

Did you replace the impeller? Your temp @ idle should be 160-170 with a 160 stat. You put in new spark plugs right? 30-40 psi is ok for...

Jun 27, 2026
Lou C replied to the thread Help! Bought a 1993 Four Winns W/ 5.0 OMC Cobra Motor and Drive - Losing power after crusing.

Consider yourself lucky Freshwater HOWEVER there is one thing many people do not know fresh water doesn't have barnacles, etc growing in...

Jun 27, 2026
Lou C replied to the thread Help! Bought a 1993 Four Winns W/ 5.0 OMC Cobra Motor and Drive - Losing power after crusing.

That's not gonna work, if you remove the impeller housing it looks like this: (ignore the bolts, that's for pulling the water pump plate...
Jun 27, 2026
Lou C reacted to alldodge's post in the thread What spark plugs to buy for 93 5.0 EFI with Like.

Your correct Thanks Lou OMC

Jun 27, 2026

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