4AG Problem

TE724AGE
Club4AG Regular
Posts: 16
Joined: Sun Feb 02, 2014 3:39 pm

4AG Problem

Postby TE724AGE » Tue Jan 20, 2015 6:57 am

Hey guys,

I just recently converted a AE92 4AG into a TE72. I also converted it to twin 40 DCOE side drafts. I started it up and it runs but timing sounds a little bit off but it idles. If I go to rev the motor it won't rev past 2500-3000rpm. I was thinking about the timing advance and I was wondering if the FWD dizzy has anything to do with it?

List of parts for timing.
-MSD 6AL with rev limiter adjuster
-MSD Blaster 2
-MSD 8680 Timing computer

Any help is appreciated! Thanks!

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sirdeuce
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Posts: 694
Joined: Mon Jan 14, 2013 9:47 pm
Location: Sierra Nevada foothills

Re: 4AG Problem

Postby sirdeuce » Tue Jan 20, 2015 9:29 am

Are the carbs jetted properly? Do you have an adequate fuel supply? I had the same problem with my '77 Celica, it was the stock fuel pump. I couldn't get my jets right in my Celica until I upgraded the fuel supply. I ran a Mallory pro pump and used a Holley reg to keep the pressure in check. That was a long time ago.
One shot, one kill.

TE724AGE
Club4AG Regular
Posts: 16
Joined: Sun Feb 02, 2014 3:39 pm

Re: 4AG Problem

Postby TE724AGE » Tue Jan 20, 2015 10:43 am

sirdeuce wrote:Are the carbs jetted properly? Do you have an adequate fuel supply? I had the same problem with my '77 Celica, it was the stock fuel pump. I couldn't get my jets right in my Celica until I upgraded the fuel supply. I ran a Mallory pro pump and used a Holley reg to keep the pressure in check. That was a long time ago.



Not sure what the jets are at. I have a Mallory pump right now and some cheapy regulator. Maybe the regulator is not allowing enough fuel to pass through? I tried adjusting the regulator but did nothing for me. Just stuck on what would be the next(correct) step.

ogdougynutty
Club4AG Enthusiast
Posts: 134
Joined: Thu Jan 24, 2013 9:07 am

Re: 4AG Problem

Postby ogdougynutty » Tue Jan 20, 2015 11:01 am

Pull your plugs and get a basic idea from that.

Also what Mallory pump do you have? and what size are your fuel lines. (I'm asking this because I'm running the same thing except different carbs)

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PDB
Club4AG Enthusiast
Posts: 146
Joined: Sat Nov 29, 2014 2:47 pm

Re: 4AG Problem

Postby PDB » Tue Jan 20, 2015 1:41 pm

Sorry to Hi-jack this thread....

How easy is the MSD to instal with the stock distributor ?

Can I use an un-ballasted coil like a Lucas DLB105.

I'm desperately trying to find a simple affordable ignition system for my 4age Starlet running bike carbs.

Thanks.

TE724AGE
Club4AG Regular
Posts: 16
Joined: Sun Feb 02, 2014 3:39 pm

Re: 4AG Problem

Postby TE724AGE » Wed Jan 21, 2015 4:55 am

Also what Mallory pump do you have? and what size are your fuel lines. (I'm asking this because I'm running the same thing except different carbs)[/quote]

Mallory 5250 I'm pretty sure. And I'm running the factory lines with 3/8 rubber lines.

sirdeuce
Club4AG Pro
Posts: 694
Joined: Mon Jan 14, 2013 9:47 pm
Location: Sierra Nevada foothills

Re: 4AG Problem

Postby sirdeuce » Wed Jan 21, 2015 6:42 am

I forget the pump size, but I ran with the stock fuel lines for a couple of years. When all was said and done I did have bungs welded to the tank for a 1/2" line to the pump and a 3/8" return. Ran 3/8" to the regulator and carbs, then 3/8" back to the tank. The stock lines were adequate for the fuel supply, but the modify it bug bit me.
One shot, one kill.

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