Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
fuel injection pump question
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support SkidSteer Forum:
Message
<blockquote data-quote="bobbie-g" data-source="post: 56886" data-attributes="member: 26"><p>OK, Phil... Here's another test you can try. Get a gallon can of clean diesel and some 5/16" hose. Take the primer bulb out of the line on the 751 (don't let the supply end of the hose disappear under the engine!). Connect a couple of lengths of hose to the primer. Put one hose in the can and pump the bulb to make sure you get a good flow of diesel out the other end. Then connect the output line directly to the injector pump. Now pump the primer whilst having your assistant spin the motor. You should get fuel leaking around any of the 4 lines that connect from the injector pump to the block (if you have them loosened). If not, I think you've done everything I know to eliminate all problems except a bad injector pump. You've even at this point eliminated the low-pressure lift pump that's inside the injector pump. I know you've said you checked the timing belt to ensure it's actually rotating the injector pump gear. I'm at a loss to think of anything else to check. Them thar pumps ain't cheap. If the preceding doesn't result in fuel coming out of the injector pump into each of the 4 lines, then I think the next step is to remove the pump and take it to an industrial diesel repair shop. I think the local shop in Albuquerque wanted about $700 to rebuild my pump, new one was $1300+ from Bobcat. What's anyone else on the forum think? Let's not let Phil... go this route if there's something else that should be tried first....... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> ---Bobbie G.</p></blockquote><p></p>
[QUOTE="bobbie-g, post: 56886, member: 26"] OK, Phil... Here's another test you can try. Get a gallon can of clean diesel and some 5/16" hose. Take the primer bulb out of the line on the 751 (don't let the supply end of the hose disappear under the engine!). Connect a couple of lengths of hose to the primer. Put one hose in the can and pump the bulb to make sure you get a good flow of diesel out the other end. Then connect the output line directly to the injector pump. Now pump the primer whilst having your assistant spin the motor. You should get fuel leaking around any of the 4 lines that connect from the injector pump to the block (if you have them loosened). If not, I think you've done everything I know to eliminate all problems except a bad injector pump. You've even at this point eliminated the low-pressure lift pump that's inside the injector pump. I know you've said you checked the timing belt to ensure it's actually rotating the injector pump gear. I'm at a loss to think of anything else to check. Them thar pumps ain't cheap. If the preceding doesn't result in fuel coming out of the injector pump into each of the 4 lines, then I think the next step is to remove the pump and take it to an industrial diesel repair shop. I think the local shop in Albuquerque wanted about $700 to rebuild my pump, new one was $1300+ from Bobcat. What's anyone else on the forum think? Let's not let Phil... go this route if there's something else that should be tried first....... :-) ---Bobbie G. [/QUOTE]
Verification
Post reply
Forums
Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
fuel injection pump question
Top