Fired new motor big problems. - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-13-2010, 07:26 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: Wichita KS
Posts: 330
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Fired new motor big problems.

Fired up my newly built 4 banger today. Got some major issues.

Compression is 125 across the board.


The engine will run fine for around 2 minutes cold, then I hear what sounds like lifter tick getting progressively louder, then the motor abruptly stops. Almost like something is heating up and seizing the motor. The starter will still turn the motor over but it will drag a bit more. I cranked the motor over several times by hand with the timing belt... Never had an issue. I primed the oil pump before installing the timing belt. Oil seeped out all the rockers as it should. Oil pressure jumps to the middle of the gauge on start up and never really drops.

I pulled the filter and cut it open. Motor ran approx 30-40 mins today total. There are small alum flakes, but nothing I'd consider major. The rings had plenty of gap (if anything on the loose side). Motor was STD bore, Bearings and rods both cut .010. ACL bearings for all.

The only thing I could think of that doesn't involve pulling the motor again this has some thing to do with the transmission? I haven't put wheels on the car yet and it's still on stands. With the car idling, I noticed when I was setting the timing the front wheel hubs were turning slowly? I don't have the Transfer case hooked up at the moment... is this normal? Could the clutch be heating up and stopping the motor? I reinstalled my old 2600 pressure plate with a new ACT street disc, new throwout bearing.

I'm stumped. And slightly pissed off to say the least! Any help appreciated.

Thanks!

    Advertisement

Last edited by ForceFed86; 06-13-2010 at 07:46 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-14-2010, 09:29 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
What engine?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-14-2010, 08:27 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: Wichita KS
Posts: 330
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
4g63t mitsubishi 2.0.

Strange it runs great sounds like a sewing machine for about the first 5 mins. Then slight valve tap (possibly rod knock who knows) that progressively gets louder until the motor shuts itself off. The engine can still eb turned over but it is difficult and the starter drags a bit. I did a comp test immediately after the motor quit. Roughly 125 across the board. Same as cold.

Drained the oil and it is not dark or burnt smelling.

Cut the filter and there are small alum flakes nothing major.

Oil pressure does not drop when the motor "seizes".

Bought the pistons and rings as a set, both STD bore 5k miles on them. I checked teh gap before installing as well.

I think it has something to do with the gear oil pump hydraulic locking.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
problems firing up old 307 fast68 Engine 4 05-11-2010 08:57 PM
Coil problems rossco Electrical 9 01-09-2009 11:32 PM
Olds 98 Ignition Module Problems awbazar Electrical 1 01-12-2004 06:42 AM
beater car problems 02 0n 20s Engine 2 11-01-2003 06:53 PM
Light Problems like crazy ponybuster Electrical 7 10-14-2003 12:12 PM


All times are GMT -6. The time now is 07:58 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.