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  1. L

    Can you tell a marine cabr from an auto one by looking at it?

    I got the carb off of my old engine and I found out that its a Weber but googleing the numbers on it doesnt turn up anything. I have an Edelbrock 1409 on my new engine and this carb looks pretty close to it. Question is the vent tubes that everyone talks about that on an auto carb vent excess...
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    Anyway to run compression on engine without starter etc?

    I am going to be bringing my old engine back to my house sometime soon. I should have run compression on it before I took it out. I knew it was something major and long story short I decided to spend a little extra money and get a new engine so I knew what I had. Right now the engine is...
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    Setting carb idle mixture screws with a vacuum gauge?

    I read you can use a vacuum port on an auto carb to set the idle mixture screws. I obviously dont have a vacuum port on my marine Edelbrock but is the port on the intake manifold a vacuum location I could use? Im talking about the one that has a hose going to it from the starboard side valve...
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    Can anyone ID this Weber carb?

    I have this engine that was removed from my boat when I got a new engine a couple months ago. I am thinking about rebuilding it. But when looking at it today I was trying to ID the carb. All I know about it is whats stamped on it. Its a Weber with these numbers. 9755S 0731 8867 Anyone know?
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    Dwell keeps changing which makes timing off?

    With the help of this forum I tuned up my dist (thanks Lou) installed a new coil and checked the carb over. The manual says dwell should be between 27-31. So I had it at exactly 29. I then set the timing to 8 BTDC. Took the boat out and it has ran great. Put another 20 hours or so on it...
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    This means clogged fuel tank vent?

    I was putting gas in the boat today. It was at little less than 1/4 tank. When I started pumping the gas started coming back out of the fill hole. Even if I tried to go slow it would start coming back out of the fill hole and the hose. I had checked the fuel tank vent before by blowing in...
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    Still cant get this Cobra shift assist to work right

    I have read every word on the Cobra on the Hastings site. I have followed his procedures for checking everything out and I still cant seem to get this thing right. The shift cable was replaced in march. I disconnected it at the engine and it does move freely and like a new cable should. I...
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    Electrolisys on old prop?

    I picked up my new as prop and my old alum prop today from a local prop shop. They remanned the old alum one so now it's a very nice spare. But they also said that there was some signs of electrolysis on the old prop. I do not have a zinc washer on where the prop shaft is? Do I need one?
  9. L

    Which spark plug for 89 OMC Cobra?

    Been hearing good things about the NGK plugs. On they're site is shows UR4 (6630) What do you guys recommend?
  10. L

    Does this sound right about a coil and resistance?

    Ok so I saw a few of us here are having some of the same problems and putting a new coil in has seemed to solve it for a little while, until it goes bad again. I replaced my coil and now the engine runs great. But I can still feel that the coil is getting hot. Not as hot as the last one but...
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    New prop doesnt fit. Store I bought it from seems giving shady advice.

    Well, per my earlier thread about my prop slipping I went out today and bought a new prop. I bought it from Marine Surplus. They are a store that is exactly what theyre name says. They stock a BUNCH of surplus marine parts they get from wherever. They have TONS of props, and they told me I...
  12. L

    How to adjust omc shift assist?

    I have been looking through the manual (Seloc crap, looking for oem one) and it tells you how to test the ESA module to see if it's bad but it doesn't tell you how to adjust the little rocker arms that engage the shift assist. I have been having a problem where sometimes it will shift fine then...
  13. L

    How to replace screens on water intake on Cobra drive?

    I have a 5.7 Cobra drive and I noticed that the screens that are on the inside of the water inlet holes on the outdrive are broken. I have looked in the manual and unless I'm missing something I don't think it says how to put new ones in. Has anyone done this before? Anyone know how to? Are...
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    Weird. Got little hot. Then normal. Checked t-stat now won't crank from key.

    Went out today for a few hours. Boat ran great. While I was cursing at about 3800 RPMs I looked down at the gauges and temp was at about 180. It usually sits around 140-150 as I'm pretty sure there's a 140 t-stat in it. So I go to idle and the temp comes back down to normal in about 1-2...
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    Spun or slipping prop?

    I have a 5.7 OMC with the Cobra drive. The prop I have on there now is an aluminum 15.5 x 15P. Pretty sure its the wrong prop but have been working out some quirks with the engine first. I read on here about putting a mark on the hub and prop and seeing if it is spun. Today I went for a 30...
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    Might have finally got the egine squared away now the outdrive?

    Ok today I was out test driving after installing a new coil. Think (hoping) I got the engine squared away as it ran like a champ today. Well the trim is sucking a lot of power and making the outdrive faulter at higher RPMs, so I was messing with the trim today in the middle of the bay and...
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    I can feel it. Im close. Still bogging, coil hot, wires to coil hot.

    So I was having some problems with my new engine running good then all of a sudden backfiring and not wanting to go over 3K RPMs. Even when it was running good it would bogg 90% of the time when the secondaries opened. Well, I pumped all of the fuel out of the tank and cleaned it, took the...
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    How to hook 2nd batt up to alt?

    I installed a 2nd battery. The spot and the battery switch was alrady there just had to drop in the battery After using it I found out that it is not being charged by the alt. How do I hook it up so it charges the 2nd battery also? I have a 5.7 OMC with the 3 wire alt. Heres a pic of the...
  19. L

    Why remove meetering rods when removing carb air horn?

    I removed the air horn on my 1409 to check the float levels. I unhooked the connections, then I took the screws out and carefully lifted the air horn up. I checked to make sure nothing fell into the intake and nothing dropped off of the carb because this is the first time I have messed with a...
  20. L

    What is this on Cobra out drive???

    I was changing my zincs and out drive oil today and I noticed this on the side of the upper. any idea what it is. If you turn it it only turns about a 1/4 or so turn each way. It doesnt come out or anything like that. There is a plastic cover on the other side in about the same spot. I was...
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