Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Garage > Technical Chat

Notices

Converted to propane-knocks on lp

Reply
 
Thread Tools Search this Thread
Old 07-04-2013, 08:58 AM   #1
05tacomalp [OP] 05tacomalp is offline
Junior Member
05tacomalp is on a distinguished road
Joined: Jul 2013, #107570
Location: Fl
Gender: Male
Posts: 4
05tacomalp's Tacoma Gallery
Converted to propane-knocks on lp

I can't seem to find the cure to this. It only knocks on LP. Can the timing be adjusted?
  Reply With Quote
Old 07-04-2013, 02:13 PM   #2
ASE Master Tech
BamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shed
 
BamaToy1997's Avatar
Marines: M1A2 hull/turret technician, 4th Maint Btn. 4th FSSG.
Name: Bill
Joined: Jan 2012, #71846
Location: Marion, AL
Age: 45
Gender: Male
Posts: 7,586
BamaToy1997's Tacoma Gallery
The only way to cure a knock condition is if the ECU is programmed to LP conversion. The timing will all be based on assuming you are running gasoline.
  Reply With Quote
Old 07-08-2013, 05:42 AM   #3
05tacomalp [OP] 05tacomalp is offline
Junior Member
05tacomalp is on a distinguished road
Joined: Jul 2013, #107570
Location: Fl
Gender: Male
Posts: 4
05tacomalp's Tacoma Gallery
Does the 05 have an octane sensor? Could Running premium gas advance the timing enough to stop the knock?
  Reply With Quote
Old 07-08-2013, 07:38 AM   #4
ASE Master Tech
BamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shedBamaToy1997 is one of the sharper tools in the shed
 
BamaToy1997's Avatar
Marines: M1A2 hull/turret technician, 4th Maint Btn. 4th FSSG.
Name: Bill
Joined: Jan 2012, #71846
Location: Marion, AL
Age: 45
Gender: Male
Posts: 7,586
BamaToy1997's Tacoma Gallery
As I recall, they don't use octane sensors, but instead typically they ramp the timing up until it senses preignition, then backs it down. I am not sure how that would work when running LP.
  Reply With Quote
Old 07-08-2013, 12:07 PM   #5
Senior Member
RacecarGuy is on a distinguished road
Joined: Jul 2012, #82501
Location: Houston, Texas
Gender: Male
Posts: 229
RacecarGuy's Tacoma Gallery
Quote:
Originally Posted by 05tacomalp View Post
Does the 05 have an octane sensor? Could Running premium gas advance the timing enough to stop the knock?
Propane has an octane rating of 112, so it should be well above the level of premium gas. Could it be possible you are not running enough propane causing a lean knock?
  Reply With Quote
Old 07-09-2013, 06:41 PM   #6
05tacomalp [OP] 05tacomalp is offline
Junior Member
05tacomalp is on a distinguished road
Joined: Jul 2013, #107570
Location: Fl
Gender: Male
Posts: 4
05tacomalp's Tacoma Gallery
I believe it should be getting ample propane. The exhaust trims were matched to the petrol trims. The system is a pretty pricey Prins VSI(Autogas) duel fuel system.
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cleaned TB, engine now "knocks". Please help! Aught2TaCO 1st Gen. Tacomas 9 09-01-2013 06:01 AM
Converted to propane. Engine has a minor knock running on LP. 05tacomalp New Members 0 07-04-2013 06:29 AM
Anyone ever converted to propane?? TacomaBuzz Technical Chat 31 02-21-2013 03:51 AM
Charcoal vs Propane dwzild Food Talk 47 09-03-2009 06:11 PM
Recoil Knocks Chick Out BLOCKADE Off-Topic Discussion 3 09-06-2008 12:18 PM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.