I have a motor home with a Chevy 454 1988 engine in it. When you try to put a load on it will misfire and backfire at about any speed. fuel pumps...

Thank you for contacting ExpertHelp LLC. My name is Ramy and I am here to help you. Please wait while I prepare my answer for you. I might need to ask you additional information so I could provide you the steps that will resolve this issue. Appreciate your patience.
You can start the conversation by using the CHAT option below.

Hi,

Thank you for choosing ExpertHelp LLC. Have you tried checking the spark plugs and the plug wires replace? This can also cause the misfire on your engine. Tell me if this helps.

Regards,

Ramy De Jesus

Expert notes:

• Live chat with the customer.
• Provide tips on what causing the problem.
• The mechanic will check it tomorrow.
• Advise customer to keep us posted if the issue has been resolve.

Hi,

If I were able to provide you a helpful and informative answer, I request to show your appreciation for my efforts by clicking the Green Accept Answer button below my first response at the top of this page.

Regards,

Ramy De Jesus