New answers tagged

1

Needle and seat issue Your needle isn't hitting the seat in the float. check for physical obstruction of the floats always replace the needle and seat as a pair. They fit together. ensure your floats actually float and do not have any holes in them If you provide more information like the model of the bike we can provide a less generic answer perhaps. ...


0

I'm leaning towards the throttle position sensor being out of adjustment/bad or a bad mass airflow sensor. Perform a volumetric efficiency test, record your IAT in °F, RPM and MAF in g/s. Use an online calculator like https://www.otctools.com/ve. You may want to do multiple pulls to get an average. TPS voltage at idle should be around .5v and at wide open ...


2

Depending on the design of the turbo kit and installation, it could be due to the turbo blow off valve, if it is vented externally and not back into the intake upstream, you could smell gas briefly when it discharges turbo pressure on a hard deceleration. https://en.wikipedia.org/wiki/Blowoff_valve


4

There are scanners that will talk to OBD1 computers, but most shops (I would guess) don't have the equipment anymore. I got rid of my OBD1 equipment last year. I've seen ≤ 2 cars that required me to use it in the past 4 years. Maybe a GM dealer would still have the equipment. You would have to call around and ask. By jumping pin A to pin B on the ALDL ...


4

You can spend time identifying which cylinder is bad but in the end you need to replace both head gaskets If both head gaskets aren't failing the other one will fail soon. You may not know it yet but you don't want to replace just the single head gasket. You want to do both. If I were in your position I'd just order two new head gaskets and get on with it ...


1

You might have a tear in your CV carburetor diaphragm At the tops of your carburetors there is a cover with 4 screws that gives access to your CV diaphragm and slide. The CV (constant velocity) carbs adjust for barometric pressure automatically. The difference in pressure from your intake tract and the atmosphere raises and lowers you slide that has the ...


6

Your carbs are clogged with varnish and bad gas The remnants of gas that has evaporated are a gummy hard varnish inside of your carburetors. You have a bit of work to do. You need to completely disassemble the carburetors and thoroughly clean all of the nooks, crannies, jets, fuel galley's and air galley's in order to get your bike back in working order. ...


5

It sounds like your carb(s) are plugged and need cleaned. If the fuel in the carbs has ethanol in it, the carbs are going to be caked with crap. The floats could be ruined. There are a lot of things going on. Getting the carbs rebuilt or at the very least cleaned up, is going to be a must. All of the symptoms you saying are pointing to carb issues.


1

Fuel, Air and spark in the right amounts and at the right times are what makes an engine purr. In your car there is an engine computer that controls these things (unless you are talking pre 1983 or so...) Generally problems involving fuel will set an OnBoard Diagnostics (OBD) code. Air issues are not all that common, and generally come from a totally ...



Top 50 recent answers are included