Author Topic: Yellow dot injector pump-how to tell? (Read 3090 times)

mbr · « **on:** September 12, 2006, 09:18:02 am »

Let's say the ip on my '82 1.6na was rebuilt by a previous owner. A pump from an earlier may have been put on and the yellow dot was rubbed off.
Is there any other way to tell if it is an actual yellow dot pump or a later pump?

hillfolk'r · « **Reply #1 on:** September 12, 2006, 09:58:38 am »

im not 100% sure,but maybe if you get the numbers off the pump,and call a good pump shop,they may be able to tell you the approximate year of the pump and stuff
obviously if its an 81 pump,it wouldnt be a yello dot
if it was a 79 or something,it may be
shoot i used to have a yello dot (banghead),the yello paint was all over the advance cover on the pump,and partially on the pump housing too,they slobbered it all over on the one i had

burn_your_money · « **Reply #2 on:** September 12, 2006, 08:37:02 pm »

pardon my ignorance but what's the advantage of the "yellow dot" IP?

mbr · « **Reply #3 on:** September 12, 2006, 08:52:38 pm »

Quote from: burn_your_money

pardon my ignorance but what's the advantage of the "yellow dot" IP?

Don't know if there's an advantage, but they have different timing specs.

rabbid79 · « **Reply #4 on:** September 12, 2006, 11:24:42 pm »

From the Haynes manual... "Two types of injection pump may be fitted, one made by Bosch or one by CAV." You don't suppose it has something to do with this do you? From what I can tell, the two don't look much alike, but maybe the yellow dot was a simple way to identify?

mbr · « **Reply #5 on:** September 12, 2006, 11:40:12 pm »

Quote from: rabbid79

From the Haynes manual... "Two types of injection pump may be fitted, one made by Bosch or one by CAV." You don't suppose it has something to do with this do you? From what I can tell, the two don't look much alike, but maybe the yellow dot was a simple way to identify?

It's definitely a Bosch. There's early yellow dot and later non dot.

hillfolk'r · « **Reply #6 on:** September 13, 2006, 12:01:19 am »

i know the advance spring from my old yello dot was stiff as a wedding dick
way stiffer than other ones(the spring under that 2 bolt cover)
i would think ya dont want that huh?>

??

Fisher · « **Reply #7 on:** September 13, 2006, 05:14:40 am »

If the part number ends with a single letter A, it is Yellow Dot, if there is any second letter ie. AG it is not a Yellow Dot.

mbr · « **Reply #8 on:** September 13, 2006, 04:59:35 pm »

Quote from: Fisher

If the part number ends with a single letter A, it is Yellow Dot, if there is any second letter ie. AG it is not a Yellow Dot.

Thanks. That's what was looking for.