73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: bigchevyc30 on February 21, 2012, 06:25:19 pm
-
im wanting top know what would a gas motor sound like if there was diesel in the tank as i filled up today and went to help my brother the truck sounded fine then but when i got home it has a really odd sound and was idling really low. truck seemed to have a sputter to it but i let it sit for a few minutes and cranked it back up and it sounded normal. would anyone know why it would sound like that
-
Not diesel. If you put enough diesel in a gas engine it will lock up, and if it does not lock up it will bang and clunk something fierce.
Diesel fuel takes a much higher compression to ignite. Odd sound like vacuum leak would make, which could be why it is idling low. Your fuel filter is not dirty is it ? Filters can start to plug up, when ran long enough they reduce flow, let it stand for awhile it clears up a little until you run it again and it restricts again.
Need a little more on what it sounded like.
-
its is most defiantly not a vacuum leak it has a rasp to it when it idles but i defiantly know its not normal at all. it to me i think sounds like it has a miss in multiple cylinders or something but ill find out in the morning when me and my friend look at it as it was dark when we got home
-
If it sounds like a few of the cylinders are missing, check your Dist. under the cap and see if it is all clean. Maybe some got a little corrosion on the brass connectors under the cap, just enough to make a couple of them miss.