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88 h.o swap bacfiring through intake and fuel pumps problem

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Old May 1, 2013 | 02:40 AM
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I have replaced the fuel pump. Going on 4 times i have 14000$ invested In this Jeep and followed


Cruisers renix to h.o swap

Any ideas what i need to check

So far looked. At timing. Iat. Cst. Looked. For melted. Wires I'm. About stumped
Last edited by anothadayridin; May 1, 2013 at 02:45 AM.
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Old May 1, 2013 | 04:05 AM
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Year: 1989 xj sport 2dr
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Originally Posted by anothadayridin
I have replaced the fuel pump. Going on 4 times i have 14000$ invested In this Jeep and followed


Cruisers renix to h.o swap

Any ideas what i need to check

So far looked. At timing. Iat. Cst. Looked. For melted. Wires I'm. About stumped
firing order.
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Old May 1, 2013 | 04:11 AM
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It ran fine. But. Always. Had a. Issue. After. Driving. Awhile and shutting. It off . It would. Be hard to start sitting. A few mins i would have to rev 2500 rpms n hold it there n it would clear itself. Up.
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Old May 1, 2013 | 04:38 AM
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Originally Posted by anothadayridin
It ran fine. But. Always. Had a. Issue. After. Driving. Awhile and shutting. It off . It would. Be hard to start sitting. A few mins i would have to rev 2500 rpms n hold it there n it would clear itself. Up.
Clear it self out as in flooded?
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Old May 1, 2013 | 04:42 AM
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Originally Posted by freegdr
firing order.
Firing order



6
3. 2
5. 4
1
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Old May 1, 2013 | 04:43 AM
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Id run it get it up to operating temp shut it off let it sit then pull plugs see if there wet with fuel . Maybe injectors leaking .
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Old May 1, 2013 | 04:43 AM
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Originally Posted by freegdr
Clear it self out as in flooded?
I guess so i got no cat on it.
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Old May 1, 2013 | 04:44 AM
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Originally Posted by anothadayridin
Firing order



6
3. 2
5. 4
1
If it runs like your saying its not firing order.
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Old May 1, 2013 | 04:45 AM
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Originally Posted by anothadayridin
I guess so i got no cat on it.
Should have no effect.
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Old May 1, 2013 | 04:45 AM
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Originally Posted by freegdr
Id run it get it up to operating temp shut it off let it sit then pull plugs see if there wet with fuel . Maybe injectors leaking .
Would that cause the stumble / loss of power/ backfire. Through. Intake. At 2000 rpms and up it wont go no more than 40mph
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Old May 1, 2013 | 04:46 AM
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The rpms wont go more than. 2200
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Old May 1, 2013 | 04:47 AM
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Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
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Originally Posted by anothadayridin
It ran fine. But. Always. Had a. Issue. After. Driving. Awhile and shutting. It off . It would. Be hard to start sitting. A few mins i would have to rev 2500 rpms n hold it there n it would clear itself. Up.
Same with old motor and new.
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Old May 1, 2013 | 04:49 AM
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It ran. Pretty good for about 3700 miles
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Old May 1, 2013 | 04:52 AM
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Had some wheeling. Trips. I mean gas tanks clean. Put new pumps in it new filter and still getting. Hornets. Nest under. Backseat. And poor driveability
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Old May 1, 2013 | 04:53 AM
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From: Broward County Fl.
Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
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Originally Posted by anothadayridin
The rpms wont go more than. 2200
In neutral or while driving? Whats fuel pressure during these rpms?
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