Top three customer exhaust questions answered

Exhaust system supplier shares know-how on common concerns

Top three customer exhaust questions answered
Bosal answers customer questions on drain holes, gaskets and catalytic converters.

Bosal Automotive and Industrial Components, a supplier of complete exhaust systems, shares with Garage Wire readers its expertise and tips on how to address the most common exhaust questions asked by customers.

Q. There seems to be a hole in the bottom of the inlet endplate on the rear box; is this a manufacturing error or is it supposed to be there?

A. This will be the drain hole; it is designed to release the condensate and increase the life of the product.

Bosal received an Environmental Technology Innovation Award for this innovation, and the concept has been adopted by several vehicle manufacturers for their OE product.

Q. Do you have a gasket for this part?

A. Bosal has a fitting kit; for quality and warranty, Bosal always recommends the purchase of new fittings compatible with the replacement part when replacing any exhaust piece.

Sourcing mounting parts from the manufacturer that designs and makes the exhaust system is the only way to guarantee the perfect fit.

That’s why whilst developing the exhaust system, Bosal also develops the installation hardware to the same standards.

Most Bosal parts now have a fitting kit associated to them.

Adding this list of kits to a purchasing system can make a big difference to sales revenue.

Q. We have been known to fit cats to a vehicle only for the customer to return a week later with a problem. Why is this?

A. When fitting a new cat, make sure to get a copy of the emissions report before the new cat is fitted and another copy after the cat is fitted.

The results are useful if the customer ever comes back with a problem.

There are things in the results that may help to find the issues, even with a pass set of results.

To use an example, lambda sensors are useful for fault finding if the pass results are 1.019 to 1.030, which shows that there is an excess of oxygen being measured at the tailpipe (running lean) even though technically it’s a pass.

This could mean there’s a slight air leak in the system.

Check gaskets, seals, flexi parts and joints for damage or ill-fitting etc; the desired result for lambda should be 1.0.

Equally, if the result is low – 0.098 – or lower, this means there’s an excess of fuel (running rich).

This will be accompanied by an elevation in CO and HC measured at the tailpipe.

Start by checking the basics such as spark plugs, coil packs, leads, sensors etc.

Remember, a new cat will be working hard and will mask small faults; it will hide the problem at the expense of its lifespan.

If the results are higher than the maximums for the MOT test, then there is a problem before the cat every time.

Remember that a cat cannot increase emissions – only reduce them.

For further information on Bosal, follow the ‘more details’ link below.

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