First, my thanks to RichardM, Lori and ChrisZ and of course MikeW (Sammy Guru in NM) for their time and knowledge/advice given while trying to troubleshoot remotely the fuel delivery issues encountered on the Sammy recently.
Bottom line, it looks like fuel is now flowing reliably to the carburetor but not making it into the fuel bowl. No fuel in the bowl, means fuel starvation. This of course means it bogs down on acceleration.
Leading up to the determination of the above condition:
Drained/Dismounted the Sammy's gas tank, verified interior was pristine, very little debris (no larger than grains of sand) found in drained gasoline.
Replaced a failed electric fuel pump, the theory was intermittent failure was causing the fuel starvation issues, but alas, probably not. It had still made the noise of functioning but apparently, no flow.
The stock carburetor on the Samurai, is a Hitachi DFB306-832 and is quite the complicated beast. A shining example of the complex and in the long term futile efforts to do emissions control back in the late 80's on carbureted cars.
Now add the plethora of vacuum lines, coolant tubes and solenoid wiring and it makes for quite the complex POS.
I will not be having someone work on the carburetor, nor will I get another one to replace the existing one. No sense getting another complex and probably unreliable carburetor!
Instead, the plan is to remove the stock carburetor and put in a simpler more modern carburetor, known as a Toyota 3K. One without a single emissions control related feature, but which passes emissions testing of course since that's mandated in the area I live in: Metro Denver Cesspool.
Another great benefit to swapping the carburetor is that the Sammy will no longer have ANY use for the ECM: Electronics Control Module. They deteriorate with age, are no longer made, and one has to hope to find a good used one when needed. The Sammy will NOT run with a bad ECM even if the carburetor is fine.
The swap will probably happen in August after Martha and I return from our summer vacation trips. I'll tow the Sammy to New Mexico and MikeW will do the install and I'll stress test it for a while. MikeW, the Sammy guru, describes the stock carburetor as "a nightmare". He won't work on them, instead, when his fails, he'll put on the same type of simpler carburetor he will put on my Sammy.
So, different vehicles will be taken on the upcoming camping trip with Martha, tune in to find out.
4 comments:
Sounds complicated. Wishing you a wonderful vacation with Martha.
Car carburetors, SonjaM, are somewhat of a daunting mystery to me. An endless source of trouble and frustration which I hope to alleviate a bit with a simpler model. We shall see. Thanks for the well wishes.
Darn, that is getting very complicated for an older Zuki. Though, I forecast that in three years you will be fitting a Prius hybrid engine that meets Colorado's ever stricter emissions code, under Sammy's hood.... right! Or an electric motor with more torque than Sammy's drivetrain can handle... like upgrading a Ural with a BMW engine. Oops, have already done that.
Ignore me, am just pulling your chain Dom. Is good to know you have friends to call on for help in times like this.
Looking forward to reading how Sammy's the new carb works out.
CCjon: The way I'm feeling about the Samurai right now.... it'll be lucky to survive the summer!
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