Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS
Sponsored by:
Sponsored by: DashLynx

3VZE Rebuilt Engine - Low Compression - WON'T START

Thread Tools
 
Search this Thread
 
Old 08-12-2011, 09:54 AM
  #21  
Registered User
 
flipemflopem's Avatar
 
Join Date: Aug 2011
Location: Logan, Utah
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
You've seriously made my day with this thread.... I've been having this exact same issue since March!! were you ever able to figure it out?
Old 03-14-2021, 08:11 AM
  #22  
Registered User
 
Yova Alv's Avatar
 
Join Date: Mar 2021
Posts: 3
Likes: 0
Received 2 Likes on 1 Post
Ive been having the same problem not wanting to start after headgasket. Valves were lapped and heads straight altho low compression was running okay even with the oil all mixxed and milky and exhaust pressure on coolant system, i refuse to blame the low compression for the fact that it was running before the work if enything the compression should have only improved with the work done but not sure, there is however a broken fuel pressure regulator vacum stem , seems to have been glued with a plastic adhesive, im leaning towards a fuel problem but it should atleast try to start if spray fuel down intake right its not even doing that after cheking timing marks i managed to make it run for 5 or 6 seconds but quickly shut of could it be that the timing is not right on the compression stroke. Does enyone have a cam picture on the correct stroke wile marks are on point? I assume they should be pointed away from one another with lobes off the valves for compression.
Old 03-14-2021, 08:25 AM
  #23  
Registered User
iTrader: (1)
 
skypilot's Avatar
 
Join Date: Sep 2010
Location: Peekskill, NY
Posts: 1,151
Likes: 0
Received 5 Likes on 5 Posts
Originally Posted by Yova Alv
Ive been having the same problem not wanting to start after headgasket. Valves were lapped and heads straight altho low compression was running okay even with the oil all mixxed and milky and exhaust pressure on coolant system, i refuse to blame the low compression for the fact that it was running before the work if enything the compression should have only improved with the work done but not sure, there is however a broken fuel pressure regulator vacum stem , seems to have been glued with a plastic adhesive, im leaning towards a fuel problem but it should atleast try to start if spray fuel down intake right its not even doing that after cheking timing marks i managed to make it run for 5 or 6 seconds but quickly shut of could it be that the timing is not right on the compression stroke. Does enyone have a cam picture on the correct stroke wile marks are on point? I assume they should be pointed away from one another with lobes off the valves for compression.
If your timing belt is right on the money, starter fluid might not work. There is a starter FI that will do the trick. its a lot of crap but it works in cases like yours. Take the cap / connector off and hot wire the injector for no more than 5 secs with the fuel pump running. Then hit the ignition to start. You just cannot get enough fuel into it from the plenum through the throttle body, you really need that injector to fire. A manual triggering does that for you. Now if you timing is off, or a valve is hanging out all bets are off. If a static compression test is below 90lbs (memory?) its not going to go. It sounds like you are off one tooth on one cam when you popped the tensioner, pulling a cam out of place. That's all it takes "one crummy tooth" and its dead.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Green93
86-95 Trucks & 4Runners
16
12-18-2008 08:54 PM
wcc_71
86-95 Trucks & 4Runners
11
03-03-2008 09:13 PM
iggy
86-95 Trucks & 4Runners
5
09-27-2005 12:13 PM
suthrn98@aol.com
95.5-2004 Tacomas & 96-2002 4Runners
4
06-22-2004 03:08 AM



Quick Reply: 3VZE Rebuilt Engine - Low Compression - WON'T START



All times are GMT -8. The time now is 06:39 PM.