Carb Problem Solex 1barrel (Volvo AQ125A I-4)

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Thanks very much Ed.<br /><br />Peter

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Ed is that part number for a fuel pump for the AQ125A?<br />if not can you post the link that I can go look at to check it out?

 

[Ed Polguy]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

eye, yes its is , all "volvo" 4 cyl. engines use the same pump.<br /> <br /> Ed

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

I'm 2/3's of the way done with this carb rebuild. The bowl had a lot what appeared to be rust sitting in the bottom and a lot of junk? I guess that stuff came about when I ran the boat dry. I'm having a hard time putting the acc. pump arm back together. I removed the nut that holds it in place pulled the arm off to get to the bottom of the bowl. I thought I knew how to put it back. Guess I forgot how it goes back together. the spring has a small hook on one end and a small leg on the other. If some one can tell me how to post a drawing of the parts I will. Its a solex PA44 down draft single barrel not sure about the part number.<br />Thanks for the info EdsCabs.

 

[deputydawg]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

The rust you see is probably a little from running out of gas, some of this is normal. The junk settles into the bowl and hangs around in there. <br />Another good tool I always use with carbs is toothpicks. You can get into the small passages to clean them and the toothpick is soft and won't score or damage the parts. Gummout carb cleaner is a must have for at home carb rebuilds. <br />Can't help much putting it back together. For future referance when I take something new apart with no manuel, I try to get digital pictures for a reminder of how to get it back together. <br />You said it was running rich and asked about leaning out the mixture. I have never worked on one of these, but carbs all work on the same basic principal. The feul mixture should be controlled by the float level and the idle mixture screw. The idle mixture screw does just that, adjusts the feul mixture at idle. To set this at the bench on MOST carbs is (rule of thumb) turn the screw all of the way in, DO NOT TIGHTEN THE SCREW, if you tigethen it even finger tight you will crease the needle valve and mess things up. Just tighten it until it touches, then back out 1 1/2 turns. Most of your feul mixture is controlled by the float level. Take your time with this and check your work several times to get the measurement right.<br />Good luck, wish I could be more help with specifics.

 

[Dunaruna]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Hi Eyezaiah, hope this helps.<br /><br /> Solex P44<br /><br />Aldo

 

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

The jets in these carbs are fixed sizes and can't be adjusted without removing and replacing them with a different size.<br />The float height may have an effect on fuel / air mixture but the rich mixture was probably from a float needle valve that has a damaged seat from the debris from the tank.<br />They can't be separated, only replaced as an assy.<br /><br />Regards<br />Peter

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

it does help. can you take a look at this diagram. dougrussel.com<br />It shows the parts that I'm refering to. numbers 35,36 and 40 the spring is what I'm having a hard time putting back in place. <br />Another problem I just found was on your diagram it shows spring 18 between 16 and 17 this one doesn't. not sure about sring 18. When I removed the main jet is a one piece deal. from the looks of the diagram it is a two piece.<br />thanks for your advice and effort. This is frustrating.

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

didn't mean to let you down peterf. you did say watch how it comes appart. I thought I did.

 

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Item #35 is the throttle shaft return spring. If it is not fitted correctly the throttle shaft will not return to idle. It looks as if the lever arm on that end faces up and away from the accell pump lever.<br />I have checked the push rod length on one of my carbs. 1.75" from the centre of the hole in the throttle arm to the BACK (spring side) of the pump lever.<br />I would take a photo of mine if it weren't all painted black. No contrast for you to see.<br />Spring 18 you need otherwise the diaphragm will not push back to draw more fuel in the chamber.<br /><br />If required I could photograph a spare carb set at home next week in daylight and email to you direct.<br /><br />Regards<br />Peter

 

[Ed Polguy]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

I have a question ?? , How does the choke work<br /> on the pa 44 ??<br />It takes a lot of pumping the throttles to get, my engines warmed up so that they will idle. <br />I cant' figure out what to adjust , <br /> thanks, Ed

 

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

There is no choke on these carbs.<br />The cold start is helped by pumping the throttle open 1 or 2 times to dump raw fuel into the manifold. You need to crack the throttle open a little when cranking to hold a fast idle to aid warm up.<br />It is almost the same procedure as for starting an aircraft engine: Prime the engine 1 - 5 times (as required), set throttle position, crank engine to start.<br /><br /> <br />Peter

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Yes please send a Pic. I'm still having no luck getting that spring back into place. That spring has a small hook on one end and a 1/4 tag in that goes into a hole on the carb. can you take a look at the spring as you would if you were removing it. I would hate to take it to a shop now only needing a 1 minute fix. Thanks for all your help!

 

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

OK send your email address to me: peter@eaglespares.co.nz and put AQ125A as the subject line.<br />I get a lot of junk mail each day that I filter out but I will get some photos for you in the next couple of days. Do you have any limits on your mail box capacity?<br /><br />Peter

 

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

eyeziah,<br />You have mail.<br /><br />Peter

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Not sure about the "hooking" of the spring. on the lever arm? can't see it in the pic. or the plate that is behind the nut holding everything in place? the plate is the oval shaped flat metal looking washer with the<br />U shaped notch cut in the bottom in the pic. Thanks a mil for the pic. The pic helped me eliminate all but two ways to hook the spring in. I'll give it a try and let you know how it works.

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

I think I have it all back in place. I bought a fuel filter/water separator and installed it.<br />there was a lot of gunk in the bottom of the bowl 1/8 of an inch thick in the passages. One of the jets had a screen around it that was completely clogged. I only removed the top plate from the carb and each jet one by one. Once question. The kit had a needle valve that looked different from mine. I could see a (check ball I believe its called) on mine. The new one just a rod in the same place. I just cleaned mine. Wasn't sure if I should replace it or not. Should I have replaced it? Hope I can put the muffs on soon and start her up.

 

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Good news indeed.<br />The jet with the screen on it is the accell pump valve & jet so if that screen was blocked that will explain why the pump was'nt delivering much fuel through the delivery nozzle.<br /><br />The Needle valve and seat that came with your O/haul kit should be OK to fit. It may be different to look at but the only thing that is critical is the height of the assy from the underside of the hex to the top of the needle pin that protrudes from the top of the brass body.<br />The thread on the body must be the same of course though<br /><br />If the throttle shaft closes onto the Idle screw stop each time you release the lever then it awould appear that you have the reassembly correct.<br /><br />Good luck <br /><br />Peter

 

[eyezaiah]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

IT's Alive!!!!!<br />Thank you, Thank you, Thank you all. even runs better. idle is smooth. <br />Question. <br />I haven't been able to let the engine run more than 15-20 seconds (3 times) at a time because I don't see any water exiting the outdrive (exhaust flap or prop hub) anywhere. I removed the top for the filter strainer housing and I don't see any water flow. I'm afraid that I will burn my impeller. I let the drive all the way down and put the muffs on covering the vent on the drive and turned the water on. do I not have enough water pressure? should I trim the drive up some?<br />first time I put the muffs on myself.<br />help

 

[Peter J Fraser]

Re: Carb Problem Solex 1barrel (Volvo AQ125A I-4)

Can you get hold of a plastic drum (50 gal or so in size) and cut it open to fit the leg into it.<br />My 280 leg has 3 holes in it for the water pick up and muffs wont work or fit on at all well.<br />You may have roasted the RWP impellor already so check that carefully as well.<br />Good to hear that the other gremlins have been moved on and your engine is running sweet.<br /><br />Peter