Chrysler 90HP Stalling in gear Problem

[CHARGER]

Hey guys Im a new member too this forum and I am from Australia and am a Chrysler lover anyway this is my problem<br /><br />I have a Chrysler 90HP 70s model and it seems too run esceptionally well but the only problem I have with it is whenI go from neutral into forward gear It nearly always stalls can this be because the idle is too low? or carbys need a clean? any adjustments? it runs really well once u get it into gear and get goin but just moving from neutral too gear it nearly always stalls<br /><br />Any help would be greatfully appreciated thankyou, And congratulations on a great looking forum

 

[Spidybot]

Re: Chrysler 90HP Stalling in gear Problem

Breathtaking...<br /><br />Too low idle may be your problem. A general tune up to ensure ingition, fuel and idle is all right is your first task.<br /><br />If you haven't got one, a manual should be ordered as it will have al the info you need.<br />At very good investment that pays back again and again!

 

[CHARGER]

Re: Chrysler 90HP Stalling in gear Problem

If i put the idle up tho will it make it mesh into gear Smoothly? im not sure on how the gearing works on this but I was thinkin if i put the idle up it might be too fast for it too mesh into gear smoothly?

 

[Spidybot]

Re: Chrysler 90HP Stalling in gear Problem

Engaging gears is to be done in a quick, firm manner. No easing it! It has no mesh (opposite a car) so the faster the better.<br /><br />If your idle is too low (dies), you must add a little to it. Once adjusted to the stated idle speed, engaging gears may be a little more rough but the snappy movement elimintes it no problem.

 

[CHARGER]

Re: Chrysler 90HP Stalling in gear Problem

Ok will try thats thanks very much for the help

 

[CHARGER]

Re: Chrysler 90HP Stalling in gear Problem

Ok this outboard stuff is harder than i thought how do I adjust the Idle I realise i gotta get a manual and ive got one on order at the moment is there a idle screw on each carby or do u adjust linkage somehow?, and also if anyone knows how too adjust the carbys mixture screw where is that at its a 70s 90HP chrysler with tripple carbys<br /><br />cheers

 

[eurolarva]

Re: Chrysler 90HP Stalling in gear Problem

Hello charger. Your carburator has an idle adjustment screw, however it is more for adjusting your fuel to air ratio then for adjusting idle speed. Yours may be too rich which is causing your motor to stall at low speeds. Here is the correct procedure. Turn adjustment screw clockwise till it lightly seats (This is located just above the choke on top of carb) idle adjust screw Turn this screw counter clockwise 1 1/4 turns. Give the motor about 3 to 4 minutes to warm up. Put in forward to the lowest setting where engine will run smoothly. Turn idle adjust screw clockwise 1/8 turn at a time, pausing at least 10 seconds between turns and adjusting the throttle to keep the engine from exceeding 900 rpm. Continue this step until the tach shows that the engine speed has peaked and is decreasing and the engine starts to misfire. Note the screw setting.<br /><br />Return idle screw to original position and repeat procedure but going counterclockwise. until the engine speeed becomes rough. Note the position of the adjustment screw.. Turn the screw to the midpoint between the two points. <br />Quickly open throttle. If the engine dies it is too lean. Turn adjustment screw counterclockwise. If the engine stumbles it is too rich and turn the screw clockwise.<br /><br />The final step is to adjust the idle speed adjust (See Link0 idle speed adjust<br /><br />Idle should be set to 750 rpm. If motor continues to kill going into gear try engaging the choke when it happens. If the choke stops the motor from killing I am afraid you will have to rebuild the carbs and probably the fuel pump.<br /><br />Good Luck

 

[CHARGER]

Re: Chrysler 90HP Stalling in gear Problem

Hey there thanks for the help great reply but that link u showed me is a completly different throttle mechanism too mine mine doesnt seem too have an adjustment like that at all? ill prolly work it out tho if i look hard enough<br /><br />Cheers

 

[eurolarva]

Re: Chrysler 90HP Stalling in gear Problem

If your motor does not have the illustration I posted you probably do not have an adjustment for idle speed. Hopefully adjusting the mixture will give you more stabilitiy in shifting so motor dont kill. I had the same thing happen to my chrysler last year and had to rebuild the carburator and the fuel pump which finally did take care of the problem. Mine only has one carb which also made the procedure easier for me.<br /><br />Good luck. Hopefully someone else will have better advise for you on this issue

 

[12Footer]

Re: Chrysler 90HP Stalling in gear Problem

Perhaps I read too quickly over these replies, but I didn't see "one cylinder not firing", as a potential cause. Make sure they are all working, by pulling or grounding one lead at a time while it runs at a swift-idle. Be carefull tho, as this has one hot ignition system, and it can be damaged by "floating" a plug wire, or not allwoing it to arc to ground. <br />But pull or ground one plug wire at a time. and see if one makes no difference in performance. If you find one that makes no change, this is your problem. Multi-cylinder outboards (even 2 cyl ones), can run seamingly fine with one not doing it's job, when it is not under a load (in gear).<br />Anything can cause one cylinder to not do it's job (fouled plug, no fuel delivered, bad coil or CD pack)<br />A comnpression test may reveal too low compression for that cylinder to work, or a fuel delivery problem are also plausible causes in addition to ignition woes, but ignition disabling will let you know if you have a problem with any of those things.<br /><br />And don't run it like this too long. A dry cylinder will quickly grind itself into trash.If it's just not getting spark tho, no harm has been done.

 

[CHARGER]

Re: Chrysler 90HP Stalling in gear Problem

I found where too adjust the idle and adjusted it a tiny bit i think it was actually idling too high cos I adjusted it back too 750rpm and took it out yesterday and she only stalled once so i think it was actually too much revs and it was getting shocked into gear

 

[eurolarva]

Re: Chrysler 90HP Stalling in gear Problem

Hey charger. Glad to hear it was something simple. Did you only adjust one carb or did you find this to be a problem with multiple carbs?

 

[CHARGER]

Re: Chrysler 90HP Stalling in gear Problem

I actually found the idle adjustment for all carbs sort of similar too the diagram showed but different<br /><br />cheers for all the help