WebDec 13, 2024 · Reading about fixed orifice PCVs made sense but old Pontiac engine PCVs aren't made the same as Chevrolet, they have a 1/2 inch nipple on their inlet to fit into a valley pan grommet. I bought a Fram FV410 PCV … WebNov 23, 2024 · There are baffles in the camshaft cover coming from the lower crankcase, going to the orifice, and from the fresh air port on the cover. GM did not design a drain on the separator inside the air plenum. The owner has to remove the entire housing and turn it over. A catch can be installed between the air plenum and camshaft port.
PCV Valve - Holley Performance Products Forums
WebMar 30, 2024 · Also to use a Fixed Orifice PCV valve. That helps keep the MAP reading stable. He said he did about 1000+ tunes from user on the Facebook Holley Sniper group page. Many great reviews. I opted for the tuning plus one year of support, plus viewing multiple datalogs to get the tune perfect. Last edited by ... WebJan 9, 2024 · A simple list of problems in no particular order: 1) If the cold engine CTS value is 10 or more degrees higher than the MAT the CTS sensor is bad and the engine will not get correct temperature enrichment. Replace the CTS if it reads high. 2) Verify fuel pressure at the Sniper with a pressure gauge. breakfast buffet blackhawk co
Vacuum hoses AMC 258 CID with Sniper 2300. - Holley
WebMar 10, 2024 · Is the Sniper EFI Learning? Is the ignition timing synchronized ? Is the fuel pressure 58-60 psi ? IAC Position of about 5% at hot idle? Vacuum leaks? Check for ignition misfires/RPM signal problems? Wiring issues ? Fixed orifice PCV valve ? Exhaust leak upstream of WBO2 sensor, or if the WBO2 sensor (or other sensor) has failed and … WebJun 5, 2024 · A PCV valve can cause a lot of weird problems with a Sniper and can actually be dangerous if the PCV sticks open at the wrong time. The Holley engineers forgot to mention this in the instructions. A spring loaded PCV should always be replaced with a fixed orifice type PCV when swapping over to EFI. Hi-fi Junior Member Join Date: Dec 2016 … WebJul 28, 2024 · 07-29-2024, 10:32 AM. IAC in park idling with the fixed orifice is about 2-3, sometimes it drops to 0-1. The IAC is higher when hole is blocked and higher with regular PCV valve installed. I'll leave the fixed orifice one in the car and continue to test for unwanted IAC activity. The engine runs great, but has been sold. breakfast buffet bloomington normal il