Hoses to recirc valves?

[rjs1669]

I have an 86 johnson 200gt - j200stlcdr. What kind of problem would i have if one of the hoses to a recirc valve was pinched closed? Some dummy, me, pinched the top port side hose between the starter and the block. Just did a rebuild on the carbs, link and sync, and checked timing. I need a roller on the throttle linkage(ordered from local dealer, should be here today), but have been having some issues getting past about 2700 rpm.It almost acts like it's missing on a cylinder. New plug wires and plugs, one new power pack(old one only firing on 2 cyl.). Once it gets up on the high speed jet i'm ok. Could that pinched hose be the problem? Thanks guys.

[316jughead]

Pinched hose usually would only cause an idle problem. Have you checked the compression?

[rjs1669]

compression is within 5 pounds on all 6 cyl. 108-112. Have had a few idle issues, but most of that went away with carb rebuild. This motor had set a few years so i've put new plugs and wires in, new coils, and new power packs. Stator checks good as does timer base. Only thing i'm not sure on is what size jets it should have. High speed is a no. 74, i'm not sure which of the other 2 is idle, but one is a no. 50 and the smaller one is not marked, but it is small enough that the smallest rod in a torch tip cleaner will not go into it.

[316jughead]

Can you tell if the intake manifold was ever off. These motors would eat the reed plate gaskets, I mean sometimes completly gone. I never had any problem after replacing the factory original gaskets, or what was left of them. Hard to believe that a motor could last this long if it was going to have a gasket problem, but I guess it's possible. Symptoms could be lean idle spit back,loss of compression, over all loss of power or preformance. Could be that your motor is running lean until the high speeds cut in. I'm not saying this is the problem, just throwing out ideas. Maybe Championman can help.

[ChampioNman]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 316jughead &raquo;</TD></TR><TR><TD CLASS="quote">Can you tell if the intake manifold was ever off. These motors would eat the reed plate gaskets, I mean sometimes completly gone. I never had any problem after replacing the factory original gaskets, or what was left of them. Hard to believe that a motor could last this long if it was going to have a gasket problem, but I guess it's possible. Symptoms could be lean idle spit back,loss of compression, over all loss of power or preformance. Could be that your motor is running lean until the high speeds cut in. I'm not saying this is the problem, just throwing out ideas. Maybe Championman can help.</TD></TR></TABLE>

That was where I was going too.

[rjs1669]

Looks to me like someone has been into this motor before. I checked the reeds out when i had the carbs off. Could'nt really see the gaskets, but the reeds all looked o.k. If the gaskets are bad could i tell without pulling the intake off? I have access to one of those new fiber optic video inspection scopes, are the gaskest going to be visable enough to tell if the are bad if i go in through the carb throats?
Also, this thing smokes some kind off bad at idle. I'd say at least twice as bad as any of the other johnny's or 'rudes that i've had.

[316jughead]

If the motor has been apart chances are the gaskets have been replaced. I don't think you could see the gaskets, but I'm not sure. You might check the fuel system for air leaks. Install a section of clear hose in the fuel line at the motor, start motor and watch for air in the line, could be bubbles to colums of air. Hose fittings, including the primer bulb, can suck in air but not leak fuel. Air in the line causes the VRO pump to pump less fuel, thus incorrect fuel to oil ratio. Excess smoking and poor performance. It's important to have correct size hose, fittings and clamps.