Q: My engine and exhaust are pulsing when my car is at idle.

asked by on December 01, 2017

I replaced the carburetor with a Weber conversion kit and after I did that it started idling rough. The engine and exhaust are pulsing. The air coming from the exhaust is choppy. What could be causing this?

My car has 120000 miles.
My car has a manual transmission.

Without knowing the exact setup done with the new carburetors I would suspect there is a carburetor setup issue and may need adjustments to the idle jets sizes since it may be running too lean or too rich at idle. An exhaust gas analysis would be needed to see if the carburetor needs different idle jets or just adjusting.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Rattling in engine when first starting

Honda has a service bulletin out for this specific complaint of a rattling noise of the engine during warm up. The bulletin number is 07-028 and it refers to having an intermediate heat shield replaced with an updated part as...

Auxilliary plug not working

I would try plugging the chord in another plug just to make sure it is not the chord. The plugs are rather simple. The sides are the ground and only the very center piece at the very back of the...

Rocking steering wheel, vibrating car

You should have the tires, rims and suspension checked for damage. You may have bent the rim or damaged tire or suspension.

Related articles

2012 Ford Edge vs. 2012 Honda Accord: Which One Should I Buy?
Comparing a small SUV or a crossover to a sedan or coupe doesn’t quite seem fair: while the crossover is likely to cost more, it will also have a different skill set than the car as well as a completely...
The Top 5 Selling Cars in Arizona in 2012
Depending Depending on where you live in Arizona, the weather is either arid or there may be periods of heavy snow – such as in the mountain areas. The vehicles that have been popular in previous years for the area,...
How Does the Fuel System Work in a Modern Car?
Cars Cars have evolved a staggering amount over the last decade, and the biggest issue that manufacturers addressed with those advancements involves the amount of fuel used by the engine. Consequently, the fuel systems found in modern cars can get...