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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> 1997 Blazer 4.3L V6 L35 Fuel Injection
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Topic Review (Newest First)
02-25-2008 06:43 PM
Vortech 4.3 you have an SFI. check out the s10forum.com forums.
02-25-2008 10:55 AM
monette999 I like to convert my Blazer to Liquid Petrolium Gas Injection.

LPG in Europe or Autogas, or GPL.

regards.
02-25-2008 10:17 AM
monette999 Vortech,
if it is a L35 engine. What do I have ?

do you need the VIN ?


monette999
02-24-2008 01:15 PM
Vortech 4.3 it should have 4 O2's, left, right, 1 before and 1 after the cat.

that is the "SFI" fuel injection, 96+. it has 6 injectors in a central block.

"CPI" has 1 throttle body type injector in a central block. that goes out to 6 poppets.
02-23-2008 11:31 PM
carsavvycook As the above post's you do have 3 0'2 sensors. The injection unit is called a CPI Fuel injection. I wonder why you are asking for this information. Are you having a starting or drive ability issue?
02-23-2008 11:11 PM
sbchevfreak You have what is known as CPFI. There are 6 injectors in a central "pod", with "spider" or capillary tubes running to poppet nozzels in the intake ports. As for O2's, you should have one in each pipe coming down from the manifols, and one AFTER the converter.
02-23-2008 05:48 PM
DoubleVision It should have 3 Oxygen sensors. My fathers 98 chevy pickup with the same engine does. One for each bank and another right before the cat converter.
02-23-2008 05:31 PM
troy norrad
re: 1997 blazer 4.3 l

Hi ok to my understanding monopoint is a single injector in the throttle body or you will have 1 per cylinder in the manifold with spider wires running to them, 1 per cylinder is multiport, as far as 02 sensors most have 1 but you may have 2, 1 per side on the exhaust manifold or the pipe right after TROY
02-23-2008 04:11 PM
monette999
1997 Blazer 4.3L V6 L35 Fuel Injection

Hello
what Fuel Injection System has my 1997 Blazer 4.3L V6 L35.

Is it a Monopoit Injector ?
How many O2 sensors do I have?

monette999

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