Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

38/38 trouble


Guest Anonymous

Recommended Posts

Guest Anonymous

I put a used 38/38 dgas on my 76 and absolutely loved it for about 2wks. Then it started running like crap taking off from an idle up to about 3,000rpms. It runs just fine at idle and when you're on the gas above 3,000 rpm's. I did some ignition troubleshooting and pulled the carb apart and sprayed through all the jets and changed the accelerator pump diaphragm while I was at it, but alas no dice. Out of desperation I slapped the old 32/36 back on and it runs fine. I really liked the 38/38 when it was running right so I guess I'll start w/ a rebuild kit, but is there anything in particular I should pay attention to? The problem I was experiencing wasn't a flat spot but more of a sputtering/running like crap. I've checked the archives but any additional insight would be appreciated.

Thanks! Chris

Link to comment
Share on other sites

Since it was running OK for a couple of weeks, it doesn't sound like anything that was basically wrong with the jetting, venturis etc, so look at these two items:

Clean both idle jets out thoroughly, and squirt the passages with carb cleaner. The changeover from the "idle" circuit to the main jet circuit occurs at around 2500 rpm, higher than most folks realize.

Next, make sure the accelerator pump is functioning. With the engine off, look down the carb throat and work the accelerator linkage quickly. You should see a squirt of gas emerging from a nozzle in the primary barrel. No squirt, no pump action. That means either a plugged nozzle or a bad accelerator pump diaphragm. Both are easy fixes, and the diaphragm is available as a separate part from the rebuild kit.

Happy troubleshooting

mike

'69 Nevada sunroof-Wolfgang-bought new
'73 Sahara sunroof-Ludwig-since '78
'91 Brillantrot 318is sunroof-Georg Friederich 
Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette) & Kermit, the Bugeye Sprite

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

×
×
  • Create New...