1996 GMC C1500 antifreeze in the fuel

COX299

MEMBER
1996 GMC C1500

Engine Mechanical problem
1996 GMC C1500 V8 Four Wheel Drive Manual

my buddy had some kids vandel his truck and they put antifreeze in his gas tank. He didnt know and started his truck. It ran for about a 60 sec and died. We towed it home and draind out all the gas and antifreeze. After that his truck started to miss on some cylinders and we changed the sparke plugs and it still missed so we draind the fuel rail and the fuel tank again and changed the fuel filter and the fuel pump and its still missing. I think some of the injectors and bad now or clogged with gunk from the antifreeze what do think it could be

3 Replies

DR LOOT

MECHANIC
2,311 POSTS

I'm afraid they put more than just antifreeze in the fuel tank, antifreeze contains alcohol and I don't think it would cause a problem I think they probably put sugar and with the antifreeze when you replace the pump did you check for some kind of residue inside the fuel tank?

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Wednesday, February 17th, 2010 AT 12:22 PM

COX299

MEMBER
2 POSTS

Ya we did there wasnt anything, we even cut the fuel filter apart and there was just gunk build up from the anifreeze. We pulled the injectors and had them tested 3 out of the 8 the orphi blow out because water dosnt compress so it made the orphi bigger and when the injector went to spray it came out as a liqued and not a mist so it wasnt atomizing the fuel and liqued gas dosnt burn thats why we had the misses. So we orderd 8 new injectors will let u know how it turns out

Was this

answer

helpful?

Yes

No

Wednesday, February 17th, 2010 AT 10:51 PM

DR LOOT